{"id":"https://openalex.org/W2087217637","doi":"https://doi.org/10.1142/s0218195914600024","title":"CONTINUOUS SURVEILLANCE OF POINTS BY ROTATING FLOODLIGHTS","display_name":"CONTINUOUS SURVEILLANCE OF POINTS BY ROTATING FLOODLIGHTS","publication_year":2014,"publication_date":"2014-09-01","ids":{"openalex":"https://openalex.org/W2087217637","doi":"https://doi.org/10.1142/s0218195914600024","mag":"2087217637"},"language":"en","primary_location":{"id":"doi:10.1142/s0218195914600024","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s0218195914600024","pdf_url":null,"source":{"id":"https://openalex.org/S25827807","display_name":"International Journal of Computational Geometry & Applications","issn_l":"0218-1959","issn":["0218-1959","1793-6357"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Computational Geometry & Applications","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://idus.us.es/xmlui/handle/11441/59985","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5035977878","display_name":"Sergey Bereg","orcid":"https://orcid.org/0000-0002-2866-6766"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"S. BEREG","raw_affiliation_strings":["Department of Computer Science, University of Texas, Dallas, Texas, USA"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Texas, Dallas, Texas, USA","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012843243","display_name":"Jos\u00e9 Miguel D\u00edaz-B\u00e1\u00f1ez","orcid":"https://orcid.org/0000-0002-4031-4309"},"institutions":[{"id":"https://openalex.org/I79238269","display_name":"Universidad de Sevilla","ror":"https://ror.org/03yxnpp24","country_code":"ES","type":"education","lineage":["https://openalex.org/I79238269"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"J. M. D\u00cdAZ-B\u00c1\u00d1EZ","raw_affiliation_strings":["Departamento Matem\u00e1tica Aplicada II, Universidad de Sevilla, Sevilla, Spain"],"affiliations":[{"raw_affiliation_string":"Departamento Matem\u00e1tica Aplicada II, Universidad de Sevilla, Sevilla, Spain","institution_ids":["https://openalex.org/I79238269"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086255484","display_name":"Marta Fort","orcid":"https://orcid.org/0000-0001-7120-050X"},"institutions":[{"id":"https://openalex.org/I251424209","display_name":"University of Girona","ror":"https://ror.org/01xdxns91","country_code":"ES","type":"education","lineage":["https://openalex.org/I251424209"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"M. FORT","raw_affiliation_strings":["Departament d'Inform\u00e1tica i Matem\u00e1tica Aplicada, Universitat de Girona, Girona, Spain"],"affiliations":[{"raw_affiliation_string":"Departament d'Inform\u00e1tica i Matem\u00e1tica Aplicada, Universitat de Girona, Girona, Spain","institution_ids":["https://openalex.org/I251424209"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015621968","display_name":"Mario A. L\u00f3pez","orcid":"https://orcid.org/0000-0002-1861-0603"},"institutions":[{"id":"https://openalex.org/I131651094","display_name":"University of Denver","ror":"https://ror.org/04w7skc03","country_code":"US","type":"education","lineage":["https://openalex.org/I131651094"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"M. A. LOPEZ","raw_affiliation_strings":["Department of Computer Science, University of Denver, Denver, USA","Department of Computer Science, University of Denver, Denver, USA#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Denver, Denver, USA","institution_ids":["https://openalex.org/I131651094"]},{"raw_affiliation_string":"Department of Computer Science, University of Denver, Denver, USA#TAB#","institution_ids":["https://openalex.org/I131651094"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082230826","display_name":"Pablo P\u00e9rez-Lantero","orcid":"https://orcid.org/0000-0002-8703-8970"},"institutions":[{"id":"https://openalex.org/I79274474","display_name":"University of Valpara\u00edso","ror":"https://ror.org/00h9jrb69","country_code":"CL","type":"education","lineage":["https://openalex.org/I79274474"]}],"countries":["CL"],"is_corresponding":false,"raw_author_name":"P. P\u00c9REZ-LANTERO","raw_affiliation_strings":["Escuela de Ingenier\u00eda Civil en Inform\u00e1tica, Universidad de Valpara\u00edso, Valparaiso, Chile"],"affiliations":[{"raw_affiliation_string":"Escuela de Ingenier\u00eda Civil en Inform\u00e1tica, Universidad de Valpara\u00edso, Valparaiso, Chile","institution_ids":["https://openalex.org/I79274474"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5036058787","display_name":"J. URRUTIA","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J. URRUTIA","raw_affiliation_strings":["Instituto de Matem\u00e1ticas, UNAM, Mexico D.F., Mexico"],"affiliations":[{"raw_affiliation_string":"Instituto de Matem\u00e1ticas, UNAM, Mexico D.F., Mexico","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5035977878"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.5519,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.86134868,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"24","issue":"03","first_page":"183","last_page":"196"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10996","display_name":"Computational Geometry and Mesh Generation","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/1704","display_name":"Computer Graphics and Computer-Aided Design"},"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/T10996","display_name":"Computational Geometry and Mesh Generation","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/1704","display_name":"Computer Graphics and Computer-Aided Design"},"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/T10586","display_name":"Robotic Path Planning Algorithms","score":0.9908000230789185,"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/T12288","display_name":"Optimization and Search Problems","score":0.9800000190734863,"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/mathematics","display_name":"Mathematics","score":0.7011058926582336},{"id":"https://openalex.org/keywords/point","display_name":"Point (geometry)","score":0.6968082189559937},{"id":"https://openalex.org/keywords/plane","display_name":"Plane (geometry)","score":0.6471614837646484},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.62060546875},{"id":"https://openalex.org/keywords/line","display_name":"Line (geometry)","score":0.4372977614402771},{"id":"https://openalex.org/keywords/rotation","display_name":"Rotation (mathematics)","score":0.43165647983551025},{"id":"https://openalex.org/keywords/clockwise","display_name":"Clockwise","score":0.4150215685367584},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.3599701523780823}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7011058926582336},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.6968082189559937},{"id":"https://openalex.org/C17825722","wikidata":"https://www.wikidata.org/wiki/Q17285","display_name":"Plane (geometry)","level":2,"score":0.6471614837646484},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.62060546875},{"id":"https://openalex.org/C198352243","wikidata":"https://www.wikidata.org/wiki/Q37105","display_name":"Line (geometry)","level":2,"score":0.4372977614402771},{"id":"https://openalex.org/C74050887","wikidata":"https://www.wikidata.org/wiki/Q848368","display_name":"Rotation (mathematics)","level":2,"score":0.43165647983551025},{"id":"https://openalex.org/C70026782","wikidata":"https://www.wikidata.org/wiki/Q16726164","display_name":"Clockwise","level":3,"score":0.4150215685367584},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.3599701523780823}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1142/s0218195914600024","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s0218195914600024","pdf_url":null,"source":{"id":"https://openalex.org/S25827807","display_name":"International Journal of Computational Geometry & Applications","issn_l":"0218-1959","issn":["0218-1959","1793-6357"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Computational Geometry & Applications","raw_type":"journal-article"},{"id":"pmh:oai:dugi-doc.udg.edu:10256/21509","is_oa":false,"landing_page_url":"http://hdl.handle.net/10256/21509","pdf_url":null,"source":{"id":"https://openalex.org/S4306401633","display_name":"Universitat de Girona Digital Repository (Universitat de Girona)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I251424209","host_organization_name":"Universitat de Girona","host_organization_lineage":["https://openalex.org/I251424209"],"host_organization_lineage_names":[],"type":"repository"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Bereg, S. D\u00edaz-B\u00e1\u00f1ez, Jos\u00e9 Miguel Fort, Marta L\u00f3pez, M.A. P\u00e9rez-Lantero, P. Urrutia, Jorge 2014 Continuous surveillance of points by rotating floodlights  International Journal of Computational Geometry and Applications 4 3 183 196","raw_type":"peer-reviewed"},{"id":"pmh:oai:idus.us.es:11441/59985","is_oa":true,"landing_page_url":"https://idus.us.es/xmlui/handle/11441/59985","pdf_url":null,"source":{"id":"https://openalex.org/S4306400333","display_name":"idUS (Universidad de Sevilla)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I79238269","host_organization_name":"Universidad de Sevilla","host_organization_lineage":["https://openalex.org/I79238269"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":{"id":"pmh:oai:idus.us.es:11441/59985","is_oa":true,"landing_page_url":"https://idus.us.es/xmlui/handle/11441/59985","pdf_url":null,"source":{"id":"https://openalex.org/S4306400333","display_name":"idUS (Universidad de Sevilla)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I79238269","host_organization_name":"Universidad de Sevilla","host_organization_lineage":["https://openalex.org/I79238269"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/conferenceObject"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/11","score":0.7099999785423279,"display_name":"Sustainable cities and communities"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W58194215","https://openalex.org/W1966792143","https://openalex.org/W2027402472","https://openalex.org/W2039610305","https://openalex.org/W2088753707","https://openalex.org/W2094658339","https://openalex.org/W2114484235","https://openalex.org/W2135237803","https://openalex.org/W2149312916","https://openalex.org/W2502636724","https://openalex.org/W3137242876","https://openalex.org/W3158940377"],"related_works":["https://openalex.org/W2012959253","https://openalex.org/W2056231124","https://openalex.org/W2124066649","https://openalex.org/W2593939335","https://openalex.org/W2046912998","https://openalex.org/W2007200854","https://openalex.org/W2382326160","https://openalex.org/W2549201271","https://openalex.org/W2371953206","https://openalex.org/W935503476"],"abstract_inverted_index":{"Let":[0],"P":[1,68,94,164],"and":[2,10,102,118,131,179],"F":[3,41,96],"be":[4],"sets":[5],"of":[6,23,40,67,93,128,153,163],"n":[7],"\u2265":[8,12],"2":[9,13],"m":[11],"points":[14],"in":[15,52,56,89,109,112,155],"a":[16,42,53,58,99,143,157],"plane,":[17],"respectively.":[18],"We":[19,83,122,172],"study":[20],"the":[21,25,87,91,107,110,125,129,134],"problem":[22,130,176],"finding":[24],"minimum":[26,135],"angle":[27,48,136,148],"\u03b1":[28,137,149],"\u03f5":[29],"[2\u03a0/m,":[30],"2\u03a0]":[31],"such":[32,57,138,156],"that":[33,139,159,174],"one":[34,74,140,170],"can":[35,141],"install":[36,142],"at":[37,61,72,80,150,168],"each":[38,151],"point":[39,66,152,162],"stationary":[43],"rotating":[44],"floodlight":[45,145],"with":[46,146],"illumination":[47,147],"\u03b1,":[49],"initially":[50],"oriented":[51],"suitable":[54],"direction,":[55],"way":[59,158],"that,":[60],"all":[62],"times,":[63],"every":[64,160],"target":[65,120,161],"is":[69,165,177],"illuminated":[70,166],"by":[71,167],"least":[73,169],"floodlight.":[75,171],"All":[76],"floodlights":[77,117],"rotate":[78],"clockwise":[79],"unit":[81],"speed.":[82],"provide":[84],"bounds":[85],"for":[86,106,133],"case":[88,108],"which":[90,113],"elements":[92],"\u22c3":[95],"are":[97],"on":[98],"given":[100],"line,":[101],"present":[103],"exact":[104],"results":[105],"plane":[111],"we":[114],"have":[115],"two":[116],"many":[119],"points.":[121],"further":[123],"consider":[124],"non-rotating":[126,144],"version":[127],"look":[132],"F,":[154],"show":[173],"this":[175],"NP-hard":[178],"hard":[180],"to":[181],"approximate.":[182]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}