{"_buckets": {"deposit": "f3382acd-dd0f-415d-b67b-4edc0329de34"}, "_deposit": {"id": "1931", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "1931"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00001931", "sets": ["454", "425"]}, "item_5_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1992-06", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "6", "bibliographicPageEnd": "684", "bibliographicPageStart": "678", "bibliographicVolumeNumber": "E75-A", "bibliographic_titles": [{"bibliographic_title": "IEICE transactions on fundamentals of electronics, communications and computer sciences"}, {"bibliographic_title": "IEICE transactions on fundamentals of electronics, communications and computer sciences", "bibliographic_titleLang": "en"}]}]}, "item_5_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Location theory on networks is concerned with the problem of selecting the best location in a specified network for facilities. Many studies for the theory have been done. However, few studies treat location problems on networks from the standpoint of measuring the closeness between two vertices by the capacity (maximum flow value) between two vertices. This paper concerns location problems, called covering problems on flow networks. We define two types of covering problems on flow networks. We show that covering problems on undirected flow networks and a covering problem on directed flow networks are solved in polynomial times.", "subitem_description_type": "Abstract"}]}, "item_5_full_name_3": {"attribute_name": "著者別名", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "6292", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "仙石, 正和"}]}]}, "item_5_publisher_7": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "The Institute of Electronics, Information and Communication Engineers"}]}, "item_5_relation_31": {"attribute_name": "異版である", "attribute_value_mlt": [{"subitem_relation_type": "isVersionOf", "subitem_relation_type_id": {"subitem_relation_type_id_text": "http://www.ieice.org/jpn/trans_online/", "subitem_relation_type_select": "URI"}}]}, "item_5_rights_15": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "copyright©1992 IEICE"}]}, "item_5_select_19": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_5_source_id_11": {"attribute_name": "書誌レコードID", "attribute_value_mlt": [{"subitem_source_identifier": "AA10826239", "subitem_source_identifier_type": "NCID"}]}, "item_5_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "09168508", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Tamura, Hiroshi"}], "nameIdentifiers": [{"nameIdentifier": "6288", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Sengoku, Masakazu"}], "nameIdentifiers": [{"nameIdentifier": "6289", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Shinoda, Shoji"}], "nameIdentifiers": [{"nameIdentifier": "5445", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Abe, Takeo"}], "nameIdentifiers": [{"nameIdentifier": "6291", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2019-07-29"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "e75-a_6_678.pdf", "filesize": [{"value": "569.9 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 569900.0, "url": {"label": "e75-a_6_678.pdf", "url": "https://niigata-u.repo.nii.ac.jp/record/1931/files/e75-a_6_678.pdf"}, "version_id": "1e6501ae-c4f8-4060-b345-83f38180e0de"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "graphs and networks", "subitem_subject_scheme": "Other"}, {"subitem_subject": "flow network", "subitem_subject_scheme": "Other"}, {"subitem_subject": "location theory", "subitem_subject_scheme": "Other"}, {"subitem_subject": "covering problem", "subitem_subject_scheme": "Other"}, {"subitem_subject": "maximum flow", "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": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Some Covering Problems in Location Theory on Flow Networks", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Some Covering Problems in Location Theory on Flow Networks"}, {"subitem_title": "Some Covering Problems in Location Theory on Flow Networks", "subitem_title_language": "en"}]}, "item_type_id": "5", "owner": "1", "path": ["454", "425"], "permalink_uri": "http://hdl.handle.net/10191/6510", "pubdate": {"attribute_name": "公開日", "attribute_value": "2008-07-28"}, "publish_date": "2008-07-28", "publish_status": "0", "recid": "1931", "relation": {}, "relation_version_is_last": true, "title": ["Some Covering Problems in Location Theory on Flow Networks"], "weko_shared_id": null}