{"id":"https://openalex.org/W107756608","doi":"https://doi.org/10.1007/978-3-642-35858-6_13","title":"A Problem in Age-Distribution","display_name":"A Problem in Age-Distribution","publication_year":2013,"publication_date":"2013-01-01","ids":{"openalex":"https://openalex.org/W107756608","doi":"https://doi.org/10.1007/978-3-642-35858-6_13","mag":"107756608"},"language":"en","primary_location":{"id":"doi:10.1007/978-3-642-35858-6_13","doi":"https://doi.org/10.1007/978-3-642-35858-6_13","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-642-35858-6_13","pdf_url":null,"source":{"id":"https://openalex.org/S4210186390","display_name":"Demographic research monographs","issn_l":"1613-5520","issn":["1613-5520","2197-9286"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Demographic Research Monographs","raw_type":"book-chapter"},"volume":{"id":"https://openalex.org/W4237773047","display_name":"Mathematical Demography"},"type":"book-chapter","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/A5004048727","display_name":"David P. Smith","orcid":"https://orcid.org/0000-0002-1474-3214","observed_orcids":["https://orcid.org/0000-0002-1474-3214"]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"David P. Smith","raw_affiliation_strings":["Harvard University, Cambridge, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Harvard University, Cambridge, USA","institution_ids":["https://openalex.org/I136199984"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5016645923","display_name":"Nathan Keyfitz","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I136199984","display_name":"Harvard University","ror":"https://ror.org/03vek6s52","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Nathan Keyfitz","raw_affiliation_strings":["Department of Sociology, Harvard University, Cambridge, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Sociology, Harvard University, Cambridge, USA","institution_ids":["https://openalex.org/I136199984"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I136199984"],"apc_list":null,"apc_paid":null,"fwci":45.4246,"has_fulltext":false,"cited_by_count":64,"citation_normalized_percentile":{"value":0.99836628,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"97","last_page":"100"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12011","display_name":"Insurance, Mortality, Demography, Risk Management","score":0.9945999979972839,"subfield":{"id":"https://openalex.org/subfields/3317","display_name":"Demography"},"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/T12011","display_name":"Insurance, Mortality, Demography, Risk Management","score":0.9945999979972839,"subfield":{"id":"https://openalex.org/subfields/3317","display_name":"Demography"},"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/T10482","display_name":"Mathematical and Theoretical Epidemiology and Ecology Models","score":0.00430000014603138,"subfield":{"id":"https://openalex.org/subfields/2739","display_name":"Public Health, Environmental and Occupational Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T13500","display_name":"Probability and Statistical Research","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/2613","display_name":"Statistics and Probability"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/age-distribution","display_name":"age distribution","score":0.9290000200271606},{"id":"https://openalex.org/keywords/population-dynamics","display_name":"population dynamics","score":0.6510000228881836},{"id":"https://openalex.org/keywords/demographic-equilibrium","display_name":"demographic equilibrium","score":0.4169999957084656}],"concepts":[{"id":"https://openalex.org/C110121322","wikidata":"https://www.wikidata.org/wiki/Q865811","display_name":"Distribution (mathematics)","level":2,"score":0.5413399338722229},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.38756561279296875},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.37692588567733765},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.261207640171051},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.2288646399974823},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.08098232746124268}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-3-642-35858-6_13","doi":"https://doi.org/10.1007/978-3-642-35858-6_13","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-642-35858-6_13","pdf_url":null,"source":{"id":"https://openalex.org/S4210186390","display_name":"Demographic research monographs","issn_l":"1613-5520","issn":["1613-5520","2197-9286"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310319965","host_organization_name":"Springer Nature","host_organization_lineage":["https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Demographic Research Monographs","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"sustainable_development_goals_aurora":[{"display_name":"Reduced inequalities","score":0.5099999904632568,"id":"https://metadata.un.org/sdg/10"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W3156766613","https://openalex.org/W2516217062","https://openalex.org/W2016510680","https://openalex.org/W2324379733","https://openalex.org/W2461356222","https://openalex.org/W3099184912","https://openalex.org/W2058787838","https://openalex.org/W1978883506","https://openalex.org/W2106535591","https://openalex.org/W2092774107"],"abstract_inverted_index":null,"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":10},{"year":2019,"cited_by_count":16},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":19},{"year":2015,"cited_by_count":2},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-10-12T09:40:04.860316","created_date":"2025-10-10T00:00:00"}