Directory of Researchers

SAKAI Hiroki
Graduate School of Maritime Sciences / Department of Maritime Sciences
Associate Professor
Business / Economics
Last Updated :2020/10/15

Researcher Profile and Settings

Affiliation

  • <Faculty / Graduate School / Others>

    Graduate School of Maritime Sciences / Department of Maritime Sciences
  • <Related Faculty / Graduate School / Others>

    Faculty of Maritime Sciences / Department of Global Transportation Sciences

Teaching

Research Activities

Research Areas

  • Humanities & social sciences / Economic policy

Published Papers

  • Which is a stronger competitor HSR or LCC to FSC? – Effects of HSR network extension and LCC entry on FSC's airfare in Japan –

    Jun Mizutani, Hiroki Sakai

    Jul. 2019, Proceedings for ATRS 2019

  • Effects of the extension of high speed rail network on transport market in Japan -the case of the extension of hokuriku shinkansen-

    Jun Mizutani, Hiroki Sakai

    Mar. 2019, The Japanese Journal of Transportation Economics, 62, 102 - 110, Japanese

    [Refereed]

    Scientific journal

  • Eri Nakamura, Hiroki Sakai, Kenichi Shoji

    We explore the impact of temporary transfer of managers on the transaction costs among unbundled business units and the important factors to consider while initiating transfers, through a case study of five Japanese railway corporations organized under a holding company structure. Our results suggest that there are very few conflicts and, thus, low transaction costs in the system, as the transferring managers engage in informal communications to align the related business units before the conflicts are actualised. However, there are cases in which other management characteristics such as human resource development programmes and organisational structures, can substitute for managerial transfers.

    Elsevier Ltd, 01 Aug. 2018, Utilities Policy, 53, 102 - 110, English

    [Refereed]

    Scientific journal

  • 外航クルーズ客船の寄港の集中がもたらす負の影響に関する考察

    KIYOTAKA YUGUCHI, SAKAI HIROKI

    Mar. 2018, 交通学研究, (61), 85 - 92, Japanese

    [Refereed]

    Scientific journal

  • クルーズ客船による大気汚染の影響ー博多港のケースー

    SUZUKI YUSUKE, SAKAI HIROKI, YUGUCHI KIYOTAKA

    日本交通学会, Mar. 2018, 交通学研究, (61), 93 - 100, Japanese

    [Refereed]

    Scientific journal

  • 我が国におけるクルーズ船誘致に向けた課題-寄港の季節性に焦点を当てて-

    SAKAI HIROKI

    一般財団法人 アジア太平洋研究所, 2018, 既存の交通ネットワークの有効活用が関西の観光事業に与える影響に関する基礎的研究, (18-5), 21 - 31, Japanese

    [Invited]

    Research institution

  • 地域交通の維持における住民参画の意義と課題-青葉台コミュニティバス運営協議会の取組み-

    SAKAI HIROKI

    日本交通政策研究会, Mar. 2017, 日交研シリーズ・地域交通維持における住民参画の意義と課題, A-676, 47 - 64, Japanese

    Research society

  • 京丹後市の道路公共交通政策-上限200円バスからシェアリング・エコノミーへ-

    高橋 愛典, 野木 秀康, SAKAI HIROKI

    近畿大学商経学会, Mar. 2017, 商経学叢, 63 (3), 77 - 79, Japanese

    Research institution

  • Managers’Temporary Transfer to Reduce Transaction Costs between Business Units:Case Study on Japanese Railway Groups having Holding Company Structure

    ERI NAKAMURA, SAKAI HIROKI, KENICHI SHOJI

    2017, 神戸大学経営学研究科ディスカッション・ペーパー, 2017.3, English

    Research society

  • 外航クルーズ客船誘致活動における現状と課題

    SAKAI HIROKI, 湧口 清隆

    日本海運経済学会, Oct. 2016, 海運経済研究, 50, 31 - 40, Japanese

    [Refereed]

    Scientific journal

  • 公営バス事業の外部委託方式に関する考察―確率フロンティアモデルによる費用効率性の分析―

    SAKAI HIROKI

    公益事業学会, Jul. 2016, 公益事業研究, 68 (1), 1 - 15, Japanese

    [Refereed]

    Scientific journal

  • 公益事業論から見た買い物弱者問題-ライフラインとしての流通-

    高橋 愛典, SAKAI HIROKI

    公益事業学会, Mar. 2016, 公益事業研究, 67 (2・3号), 9 - 19, Japanese

    [Refereed]

    Scientific journal

  • Evaluating Progressive Contractual Arrangement in Japanese Publicly-owned Bus Sector

    SAKAI HIROKI

    Aug. 2015, Proceedings for Thredbo14 (14th International Conference on Competition and Ownership in Land Passenger Transport), English

    International conference proceedings

  • Fumitoshi Mizutani, Yusuke Suzuki, Hiroki Sakai

    Using a dataset of 111 Japanese cities in 2005, the article estimates the social costs of car transport and analyses the structure of the components of and the relationship between social costs and city size. The following major results are obtained. First, the social costs of vehicular transport increase at an accelerated pace as city size becomes larger. Secondly, while the construction of roads does not work to decrease the social costs of vehicular transport, public transport has a tendency to decrease such costs, although with minimal effect. Thirdly, the traffic congestion component represents more than 45 per cent of the total social cost of vehicular transport. Cost due to global warming accounts for 5-11 per cent of the total. Fourthly, the social costs of vehicular transport are about 8 per cent of GDP. Fuel tax for cars covers only 16.3 per cent of the social costs of regular car use.

    SAGE PUBLICATIONS LTD, Dec. 2011, URBAN STUDIES, 48 (16), 3537 - 3559, English

    [Refereed]

    Scientific journal

  • わが国公営バス事業における民間事業者活用の効果

    SAKAI HIROKI, SHOJI KENICHI

    Jun. 2010, 国民経済雑誌, 201 (6), 1 - 20, Japanese

    Research institution

  • 乗合バス路線に基づく災害ロードマップ作成

    伊角 愛結, 沖本 天太, 平山 勝敏, 酒井 裕規, 西村 悦子

    Mar. 2017, 情報処理学会第79回全国大会 (IPSJ 2017), 2, 355 - 356, Japanese

    Research society

  • 乗合バス路線を活用した災害時の知的ロジスティクス支援システムの構築

    沖本天太, 酒井裕規, 西村悦子

    Sep. 2016, 第15回情報科学技術フォーラム (FIT-2016), 2, 355 - 356, Japanese

    Research society

  • Hiroki Sakai, Kenichi Shoji

    The publicly-owned municipal bus sector that provides local transport in Japan is in a difficult situation because of operating deficits, inefficient operations and management, and budgetary constraints of expanding subsidies, and thus, it needs to be restructured to improve efficiency. This paper investigates the impact of subsidies and contractual settings on the cost structure of the publicly-owned bus sector in Japan. A trans-log cost function has been estimated by pooling cross-sectional data of 527 observations over the time period of 1990-2006 for a cross-section of 31 publicly-owned transport companies in Japan. Our analytical results confirm that governmental subsidies to this sector negatively affect the cost structure, while the contractual model may have a positive impact. We also discuss the implications of these results for Japan's public transport policy. © 2010 Elsevier Ltd.

    2010, Research in Transportation Economics, 29 (1), 60 - 71, English

    [Refereed]

    Scientific journal

MISC

  • 松崎朱芳著『都市における乗合旅客自動車輸送』

    SAKAI HIROKI

    公益事業学会, Sep. 2018, 公益事業研究, 70 (1), 35 - 36, Japanese

    Book review

  • 交通サービスの供給費用

    SAKAI HIROKI

    同文館出版, May 2018, 交通政策入門第2版, Japanese

    Introduction commerce magazine

  • 地方港におけるクルーズ船誘致に向けた課題

    SAKAI HIROKI

    一般財団法人運輸調査局, Jul. 2017, 運輸と経済, 77 (7), 42 - 49, Japanese

    [Invited]

    Introduction commerce magazine

  • Managers' temporary transfer to reduce transaction costs between business units: Case study on Japanese railway groups having holding company structure

    Eri Nakamura, Hiroki Sakai, Kenichi Shoji

    Mar. 2017, Kobe University Discussion Paper Series, English

    Technical report

Research Projects