SAKAI Hiroki | ![]() |
Graduate School of Maritime Sciences / Department of Maritime Sciences | |
Associate Professor | |
Business / Economics |
[Refereed]
Scientific journal
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
[Refereed]
Scientific journal
[Refereed]
Scientific journal
[Invited]
Research institution
Research society
Research society
Research institution
Research society
[Refereed]
Scientific journal
Research society
[Refereed]
Scientific journal
[Refereed]
Scientific journal
International conference proceedings
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
Research institution
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
Book review
Introduction commerce magazine
[Invited]
Introduction commerce magazine
Technical report
Competitive research funding
Competitive research funding
Competitive research funding
Competitive research funding