{"created":"2023-03-30T05:04:06.686042+00:00","id":2007257,"links":{},"metadata":{"_buckets":{"deposit":"8af22966-1aa3-4e6e-aa6c-a4e008c2f466"},"_deposit":{"id":"2007257","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2007257"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:02007257","sets":["55:864:1680142560841","9:504:867:1680142653245"]},"author_link":[],"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2023-03-17","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"43","bibliographicPageStart":"21","bibliographicVolumeNumber":"74","bibliographic_titles":[{"bibliographic_title":"社會科學研究","bibliographic_titleLang":"ja"},{"bibliographic_title":"Journal of Social Science","bibliographic_titleLang":"en"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Political economy theories predict certain configurations of national boundaries, but these have not been calculated because of computational difficulties. Taking advantage of advances in mixed integer programming algorithms, we compute predicted political boundaries for Europe using a simple theoretical model taken from the literature: the size and arrangement of countries is determined by a tradeoff between efficiencies of scale and geographic heterogeneity. The model shows that the \"natural borders\" that lead to states emerging in certain configurations do not need to be particularly extreme, and a small number of these geographic features can influence the configuration of boundaries over a larger area. Our results show how real-world political boundaries can be described by a simple one parameter theoretical model that ignores many of the proximate causes of boundary changes.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_4_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"通常論文","subitem_description_language":"ja","subitem_description_type":"Other"},{"subitem_description":"General Article","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学社会科学研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"Institute of Social Science, The University of Tokyo","subitem_publisher_language":"en"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00108966","subitem_source_identifier_type":"NCID"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"東京大学社会科学研究所"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"東京大学","affiliationNameLang":"ja"},{"affiliationName":"The University of Tokyo","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"ウィース, エリック","creatorNameLang":"ja"},{"creatorName":"WEESE, Eric","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2023-03-30"}],"displaytype":"detail","filename":"shk074003.pdf","filesize":[{"value":"6.9MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/2007257/files/shk074003.pdf"},"version_id":"455442f6-0c05-449d-9b4d-568caca3abde"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"coalition formation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"national borders","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"mixed integer programming","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"European Political Boundaries as the Outcome of a Self-Organizing Process","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"European Political Boundaries as the Outcome of a Self-Organizing Process","subitem_title_language":"en"}]},"item_type_id":"4","owner":"1","path":["1680142560841","1680142653245"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-03-30"},"publish_date":"2023-03-30","publish_status":"0","recid":"2007257","relation_version_is_last":true,"title":["European Political Boundaries as the Outcome of a Self-Organizing Process"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-03-30T05:04:13.236658+00:00"}