{"id":"https://openalex.org/W158472882","doi":null,"title":"FIELDS AND OBJECTS ALGEBRAS FOR GIS OPERATIONS1","display_name":"FIELDS AND OBJECTS ALGEBRAS FOR GIS OPERATIONS1","publication_year":1995,"publication_date":"1995-01-01","ids":{"openalex":"https://openalex.org/W158472882","mag":"158472882"},"language":"en","primary_location":{"id":"pmh:oai:urlib.net:sid.inpe.br/iris@1912/2005/07.19.21.39.41-0","doi":null,"is_oa":true,"landing_page_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.19.21.39.34","pdf_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.19.21.39.34","source":{"id":"https://openalex.org/S4377196298","display_name":"Biblioteca Digital da Mem\u00f3ria Cient\u00edfica do INPE (National Institute for Space Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I80849659","host_organization_name":"Instituto Nacional de Pesquisas Espaciais","host_organization_lineage":["https://openalex.org/I80849659"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"text"},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.19.21.39.34","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5073328355","display_name":"Gilberto C\u00e2mara","orcid":"https://orcid.org/0000-0002-3681-487X","observed_orcids":["https://orcid.org/0000-0002-3681-487X"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Gilberto C\u00e2mara","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009769513","display_name":"Ubirajara Moura De Freitas","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ubirajara Moura De Freitas","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5077506036","display_name":"Marco A. Casanova","orcid":"https://orcid.org/0000-0003-0765-9636","observed_orcids":["https://orcid.org/0000-0003-0765-9636"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Marco A. Casanova","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-0765-9636","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.9779,"has_fulltext":true,"cited_by_count":3,"citation_normalized_percentile":{"value":0.91051592,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":93,"max":95},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10757","display_name":"Geographic Information Systems Studies","score":0.3596000075340271,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10757","display_name":"Geographic Information Systems Studies","score":0.3596000075340271,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12698","display_name":"3D Modeling in Geospatial Applications","score":0.12399999797344208,"subfield":{"id":"https://openalex.org/subfields/2215","display_name":"Building and Construction"},"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/T11106","display_name":"Data Management and Algorithms","score":0.1137000024318695,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/geographic-information-systems","display_name":"geographic information systems","score":0.8759999871253967},{"id":"https://openalex.org/keywords/spatial-data-representation","display_name":"spatial data representation","score":0.6290000081062317},{"id":"https://openalex.org/keywords/spatial-language","display_name":"spatial language","score":0.6209999918937683},{"id":"https://openalex.org/keywords/legal-language","display_name":"legal language","score":0.8019999861717224},{"id":"https://openalex.org/keywords/spring-system","display_name":"spring system","score":0.9810000061988831}],"concepts":[{"id":"https://openalex.org/C9652623","wikidata":"https://www.wikidata.org/wiki/Q190109","display_name":"Field (mathematics)","level":2,"score":0.4111132025718689},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.4103376269340515},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4020424485206604},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.32736605405807495},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.32140031456947327},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.17547941207885742},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.1428762674331665},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.12440785765647888}],"mesh":[],"locations_count":4,"locations":[{"id":"pmh:oai:urlib.net:sid.inpe.br/iris@1912/2005/07.19.21.39.41-0","doi":null,"is_oa":true,"landing_page_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.19.21.39.34","pdf_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.19.21.39.34","source":{"id":"https://openalex.org/S4377196298","display_name":"Biblioteca Digital da Mem\u00f3ria Cient\u00edfica do INPE (National Institute for Space Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I80849659","host_organization_name":"Instituto Nacional de Pesquisas Espaciais","host_organization_lineage":["https://openalex.org/I80849659"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"text"},{"id":"pmh:oai:urlib.net:sid.inpe.br/iris@1912/2005/07.20.09.30.51-0","doi":null,"is_oa":true,"landing_page_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.20.09.30","pdf_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.20.09.30","source":{"id":"https://openalex.org/S4377196298","display_name":"Biblioteca Digital da Mem\u00f3ria Cient\u00edfica do INPE (National Institute for Space Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I80849659","host_organization_name":"Instituto Nacional de Pesquisas Espaciais","host_organization_lineage":["https://openalex.org/I80849659"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.17.991","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.17.991","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.dpi.inpe.br/gilberto/premio_compaq.pdf","raw_type":"text"},{"id":"mag:158472882","doi":null,"is_oa":false,"landing_page_url":"http://www.dpi.inpe.br/gilberto/papers/premio_compaq.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"pmh:oai:urlib.net:sid.inpe.br/iris@1912/2005/07.19.21.39.41-0","doi":null,"is_oa":true,"landing_page_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.19.21.39.34","pdf_url":"http://urlib.net/sid.inpe.br/iris@1912/2005/07.19.21.39.34","source":{"id":"https://openalex.org/S4377196298","display_name":"Biblioteca Digital da Mem\u00f3ria Cient\u00edfica do INPE (National Institute for Space Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I80849659","host_organization_name":"Instituto Nacional de Pesquisas Espaciais","host_organization_lineage":["https://openalex.org/I80849659"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320322025","display_name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","ror":"https://ror.org/03swz6y49"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W158472882.pdf","grobid_xml":"https://content.openalex.org/works/W158472882.grobid-xml"},"referenced_works_count":5,"referenced_works":["https://openalex.org/W1544752055","https://openalex.org/W2046406283","https://openalex.org/W2124199440","https://openalex.org/W2128288949","https://openalex.org/W2161109697"],"related_works":["https://openalex.org/W7066214967","https://openalex.org/W7097635477","https://openalex.org/W6991959509","https://openalex.org/W7020399679","https://openalex.org/W7097375963","https://openalex.org/W1605341096","https://openalex.org/W63978477","https://openalex.org/W7096733849","https://openalex.org/W7100985965","https://openalex.org/W6990048677"],"abstract_inverted_index":{"Este":[0],"trabalho":[1,53],"discute":[2],"o":[3,26],"problema":[4],"da":[5,34,71,75],"definicao":[6],"formal":[7],"das":[8],"operacoes":[9,39],"em":[10,20],"sistemas":[11],"de":[12,55],"informacao":[13],"geografica.":[14,36],"Os":[15],"dados":[16],"geograficos":[17],"sao":[18],"divididos":[19],"duas":[21],"classes:":[22],"geo-objetos":[23],"e":[24,43,48,74],"geo-campos,":[25],"que":[27],"reflete":[28],"a":[29],"natureza":[30],"dual":[31],"(discreto-continuo)das":[32],"representacoes":[33],"realidade":[35],"Estudam-se":[37],"as":[38,44],"sobre":[40],"campos,":[41],"geo-ojetos":[42],"transformacoes":[45],"entre":[46],"geo-campos":[47],"geo-objetos.":[49],"A":[50],"analise":[51],"deste":[52],"serve":[54],"base":[56],"para":[57],"LEGAL,":[58],"uma":[59],"linguagem":[60],"espacial":[61],"utilizada":[62],"no":[63],"sistema":[64],"SPRING,":[65],"desenvolvido":[66],"pelo":[67],"INPE":[68],"com":[69],"apoio":[70],"IBM":[72],"Brasil":[73],"EMBRAPA.":[76]},"counts_by_year":[{"year":2020,"cited_by_count":2}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}
