{"created":"2021-03-01T06:34:34.880782+00:00","id":17270,"links":{},"metadata":{"_buckets":{"deposit":"4722c5d1-7385-4343-b9e2-836ce992209a"},"_deposit":{"id":"17270","owners":[],"pid":{"revision_id":0,"type":"depid","value":"17270"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00017270","sets":["55:864:972:976","9:504:867:974:977"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Dynamic Entry Deterrence in a Location-Price Model"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2004-03-18","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3-4","bibliographicPageEnd":"35","bibliographicPageStart":"27","bibliographicVolumeNumber":"55","bibliographic_titles":[{"bibliographic_title":"社會科學研究"}]}]},"item_4_description_13":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"規制改革・構造改革に関する議論が盛んに行われているが,その中で競争政策の重要性も改めて高まっている感がある.本稿では,その中の私的独占に関連する問題を取り上げる.私的独占の経済学的な問題点は,端的に言えば,効率性(社会余剰)の最大化に反するという点である.既存企業が参入阻止行動を取った結果,あるいは,様々な規制の存在等により参入が起こらず,競争による利益が実現しない状況がその典型例である.この問題の最も基本的な解決策は,参入促進のために参入費用を低下させることである.本稿は,この参入費用低下策に全く効果がない場合があることを理論モデルを用いて指摘する.より具体的には,一定の条件を組み込んだ動学的な立地-価格モデルを構築した上で,均衡において,参入費用と退出費用が共に0であっても既存企業が全ての市場を独占ている状態からは参入が起こらず,既存企業は潜在的な参入の機会に直面しても行動を変える必要がないことを示す.","subitem_description_type":"Abstract"},{"subitem_description":"Incumbent firms often use various means to prevent entry. Also, various regulations sometimes make entry difficult even though they do not intend to do so. As a result, entry cost becomes so high that no entry occurs. In order to induce entry, it is usually effective to reduce the entry cost. However, the present paper shows that reducing entry cost is of no use in a certain environment. More concretely, we construct a dynamic location-price model, where a potential entrant can enter a horizontally differentiated market after an incumbent monopolist. When firms face some kind of financial constraints, no entry occurs in the (unique) subgame perfect equilibrium.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"107901","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Ishibashi, Ikuo"}]}]},"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"}]},"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_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03873307","subitem_source_identifier_type":"ISSN"}]},"item_4_subject_15":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"300","subitem_subject_scheme":"NDC"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"Institute of Social Science, The University of Tokyo"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"青山学院大学経済学部"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"石橋, 郁雄"}],"nameIdentifiers":[{"nameIdentifier":"107900","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":"2017-06-26"}],"displaytype":"detail","filename":"KJ00004192015.pdf","filesize":[{"value":"594.7 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KJ00004192015.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/17270/files/KJ00004192015.pdf"},"version_id":"8edfa21f-4884-4ab9-a77d-0e74695abf5c"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"製品差別化","subitem_subject_scheme":"Other"},{"subitem_subject":"参入阻止","subitem_subject_scheme":"Other"},{"subitem_subject":"立地-価格モデル","subitem_subject_scheme":"Other"},{"subitem_subject":"独占","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"立地-価格モデルにおける参入に関する動学的分析","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"立地-価格モデルにおける参入に関する動学的分析"}]},"item_type_id":"4","owner":"1","path":["976","977"],"pubdate":{"attribute_name":"公開日","attribute_value":"2008-09-19"},"publish_date":"2008-09-19","publish_status":"0","recid":"17270","relation_version_is_last":true,"title":["立地-価格モデルにおける参入に関する動学的分析"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T03:55:57.331872+00:00"}