{"id":"https://openalex.org/W2030615962","doi":"https://doi.org/10.1016/0167-8655(85)90062-5","title":"A pyramid that grows by powers of 2","display_name":"A pyramid that grows by powers of 2","publication_year":1985,"publication_date":"1985-09-01","ids":{"openalex":"https://openalex.org/W2030615962","doi":"https://doi.org/10.1016/0167-8655(85)90062-5","mag":"2030615962"},"language":"en","primary_location":{"id":"doi:10.1016/0167-8655(85)90062-5","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0167-8655(85)90062-5","pdf_url":null,"source":{"id":"https://openalex.org/S151820558","display_name":"Pattern Recognition Letters","issn_l":"0167-8655","issn":["0167-8655","1872-7344"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Pattern Recognition Letters","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5081777844","display_name":"Walter G. Kropatsch","orcid":"https://orcid.org/0000-0003-4915-4118"},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Walter G. Kropatsch","raw_affiliation_strings":["Center for Automation Research, University of Maryland, College Park, MD 20742, USA","Center for Automation Research, University of Maryland, College Park, MD, 20742, USA"],"affiliations":[{"raw_affiliation_string":"Center for Automation Research, University of Maryland, College Park, MD 20742, USA","institution_ids":["https://openalex.org/I66946132"]},{"raw_affiliation_string":"Center for Automation Research, University of Maryland, College Park, MD, 20742, USA","institution_ids":["https://openalex.org/I66946132"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5081777844"],"corresponding_institution_ids":["https://openalex.org/I66946132"],"apc_list":{"value":2500,"currency":"USD","value_usd":2500},"apc_paid":null,"fwci":2.7366,"has_fulltext":false,"cited_by_count":33,"citation_normalized_percentile":{"value":0.88999681,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"3","issue":"5","first_page":"315","last_page":"322"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":0.9959999918937683,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/T11797","display_name":"graph theory and CDMA systems","score":0.9959999918937683,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/T11737","display_name":"Advanced Materials and Mechanics","score":0.9922000169754028,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical 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/T12176","display_name":"Optimization and Packing Problems","score":0.9648000001907349,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing 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/pyramid","display_name":"Pyramid (geometry)","score":0.8685256242752075},{"id":"https://openalex.org/keywords/square","display_name":"Square (algebra)","score":0.8558320999145508},{"id":"https://openalex.org/keywords/square-pyramid","display_name":"Square pyramid","score":0.8284746408462524},{"id":"https://openalex.org/keywords/diagonal","display_name":"Diagonal","score":0.8064488172531128},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.6300042867660522},{"id":"https://openalex.org/keywords/square-tiling","display_name":"Square tiling","score":0.6108035445213318},{"id":"https://openalex.org/keywords/unit-square","display_name":"Unit square","score":0.6019729375839233},{"id":"https://openalex.org/keywords/unit","display_name":"Unit (ring theory)","score":0.5451802611351013},{"id":"https://openalex.org/keywords/grid","display_name":"Grid","score":0.5070474147796631},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.5065778493881226},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.4618498384952545},{"id":"https://openalex.org/keywords/decomposition","display_name":"Decomposition","score":0.43278127908706665},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.2614254057407379},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.13045665621757507},{"id":"https://openalex.org/keywords/crystallography","display_name":"Crystallography","score":0.10644558072090149},{"id":"https://openalex.org/keywords/chemistry","display_name":"Chemistry","score":0.06332868337631226}],"concepts":[{"id":"https://openalex.org/C142575187","wikidata":"https://www.wikidata.org/wiki/Q3358290","display_name":"Pyramid (geometry)","level":2,"score":0.8685256242752075},{"id":"https://openalex.org/C135692309","wikidata":"https://www.wikidata.org/wiki/Q111124","display_name":"Square (algebra)","level":2,"score":0.8558320999145508},{"id":"https://openalex.org/C200119971","wikidata":"https://www.wikidata.org/wiki/Q1075704","display_name":"Square pyramid","level":3,"score":0.8284746408462524},{"id":"https://openalex.org/C130367717","wikidata":"https://www.wikidata.org/wiki/Q189791","display_name":"Diagonal","level":2,"score":0.8064488172531128},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.6300042867660522},{"id":"https://openalex.org/C178650486","wikidata":"https://www.wikidata.org/wiki/Q1128619","display_name":"Square tiling","level":3,"score":0.6108035445213318},{"id":"https://openalex.org/C7356347","wikidata":"https://www.wikidata.org/wiki/Q1307838","display_name":"Unit square","level":2,"score":0.6019729375839233},{"id":"https://openalex.org/C122637931","wikidata":"https://www.wikidata.org/wiki/Q118084","display_name":"Unit (ring theory)","level":2,"score":0.5451802611351013},{"id":"https://openalex.org/C187691185","wikidata":"https://www.wikidata.org/wiki/Q2020720","display_name":"Grid","level":2,"score":0.5070474147796631},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.5065778493881226},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.4618498384952545},{"id":"https://openalex.org/C124681953","wikidata":"https://www.wikidata.org/wiki/Q339062","display_name":"Decomposition","level":2,"score":0.43278127908706665},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.2614254057407379},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.13045665621757507},{"id":"https://openalex.org/C8010536","wikidata":"https://www.wikidata.org/wiki/Q160398","display_name":"Crystallography","level":1,"score":0.10644558072090149},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.06332868337631226},{"id":"https://openalex.org/C145420912","wikidata":"https://www.wikidata.org/wiki/Q853077","display_name":"Mathematics education","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C115624301","wikidata":"https://www.wikidata.org/wiki/Q895901","display_name":"Crystal structure","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0167-8655(85)90062-5","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0167-8655(85)90062-5","pdf_url":null,"source":{"id":"https://openalex.org/S151820558","display_name":"Pattern Recognition Letters","issn_l":"0167-8655","issn":["0167-8655","1872-7344"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Pattern Recognition Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6399999856948853,"id":"https://metadata.un.org/sdg/11","display_name":"Sustainable cities and communities"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W1540413912","https://openalex.org/W2036259465","https://openalex.org/W2046614572","https://openalex.org/W2050724748","https://openalex.org/W2074163268","https://openalex.org/W2084379475","https://openalex.org/W2978983090","https://openalex.org/W6662436283"],"related_works":["https://openalex.org/W2905857035","https://openalex.org/W1999426106","https://openalex.org/W4322575877","https://openalex.org/W1970092645","https://openalex.org/W1792098837","https://openalex.org/W2514646869","https://openalex.org/W181378","https://openalex.org/W1605924093","https://openalex.org/W1566843515","https://openalex.org/W2030615962"],"abstract_inverted_index":null,"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
