- 著者
- Kiyoshi SUZUKI Nobu TSUCHIZAKI Yusuke KANDA Kenji DOI
- 出版者
- Eastern Asia Society for Transportation Studies
- 雑誌
- Asian Transport Studies (ISSN:21855560)
- 巻号頁・発行日
- vol.3, no.1, pp.81-94, 2014 (Released:2014-03-05)
- 参考文献数
- 15
In recent years, efforts have been made to develop bicycle-friendly environments across Japan. However, such development is conducted only where roads are sufficiently wide, and thus efficient networks are not easily developed. In this situation, it is essential to accurately evaluate demand change following development and to examine how to meet network needs, while developing the areas that are easier to proceed with. Therefore, to organize the information required to evaluate demand change, we build a route choice model using data from Takamatsu city and conduct verification using data from the actual implementation of measures. The study shows that bicycle route choice is mainly affected by discontinuity and presence of turns. Furthermore, we specify the need to note partial bottlenecks and consider measures under the assumption that route choice is impromptu when we evaluate demand change.
- 著者
- Lei GONG Toshiyuki YAMAMOTO Takayuki MORIKAWA
- 出版者
- Eastern Asia Society for Transportation Studies
- 雑誌
- Asian Transport Studies (ISSN:21855560)
- 巻号頁・発行日
- vol.4, no.1, pp.114-128, 2016 (Released:2016-03-01)
- 参考文献数
- 27
Ever since global positioning system (GPS) modules have been attached to smart phones, much research has focused on how to obtain personal trip (PT) information from them. One of the challenges is identifying activity type (or inferring the purpose of the trip) from these continuous GPS data. This paper focuses on obtaining the type of activity using several machine learning methods and comparing the results. The comparison is implemented from the perspective of accuracy and time cost in the phases of data training and prediction. After applying four machine learning methods to the data set obtained from 30 individuals in Nagoya, Japan, a classification tree method demonstrates superiority over support vector machine (SVM), neural network (NN), and discriminant analysis methods.
- 著者
- Kyungtaek KIM Tetsuo YAI
- 出版者
- Eastern Asia Society for Transportation Studies
- 雑誌
- Asian Transport Studies (ISSN:21855560)
- 巻号頁・発行日
- vol.5, no.5, pp.845-861, 2019 (Released:2019-12-15)
- 参考文献数
- 23
This study evaluates the impact of the business interactive accessibility (BIA) by high-speed railway (HSR) of Japan. The BIA by HSR is a potential interaction for business purposes by HSR, based on the accessibility. Socio-economic conditions affect the BIA, but they have been only considered partially in the accessibility of previous studies. This study develops new variables, Densely-Buoyant District (DBD) at the micro-level and Densely-Buoyant Prefecture (DBP) at the macro-level. The indices denote the BIA considering socio-economic conditions: firms, workers, business scale, and distance between firms within a region. To examine the impact of DBP by HSR, we utilize the production function including DBP, prefecture-fixed effects, and time-fixed effects. The result suggests that DBP enhanced by HSR increases productivity. DBP of the secondary industry and tertiary industry enhances productivity, but not the primary industry. Therefore, the BIA by HSR in the secondary and tertiary industries contributes to regional growth.
- 著者
- Junya IIDA Daisuke WATANABE Kenta NAGATA Masahiro MATSUDA
- 出版者
- Eastern Asia Society for Transportation Studies
- 雑誌
- Asian Transport Studies (ISSN:21855560)
- 巻号頁・発行日
- vol.5, no.4, pp.694-719, 2019 (Released:2019-09-01)
- 参考文献数
- 48
Consignors, consignees, and freight forwarders need procedure status information on import and export containers, such as customs clearance, not only within a specific country but also across relevant countries in order to optimize supply chain management. In this paper, we review the current situation and literature on the sharing of procedure status information using IT systems. After clarifying issues in this regard, we present an IT system we have developed for sharing procedure status information in real time among Port Community Systems across countries. Finally, we discuss the issues and prospects in the development of the IT system. We conclude that, at present, it is beneficial to apply a decentralized system architecture in the sharing of procedure status information across countries without attaching any additional devices such as Radio Frequency Identification (RFID) tags.