Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

<p>With the quiescence of COVID-19, it is time for both companies and workers to reconsider the frame-work of telework. In this study, we analyzed the impact of telework on workers, focusing on subjective well-being (SWB), using questionnaire survey data. The estimation results using structural equation modeling revealed that telework does not directly affect SWB. However, it was shown to indirectly influence SWB through factors such as work-related stress, job enthusiasm, work-life balance, and satisfaction with travel scale. Furthermore, working from satellite offices was found to have a positive impact on job enthusiasm, while wanting but being unable to work from home negatively affected job enthusiasm. This study demonstrates the complex mechanisms through which teleworking indirectly affects SWB, providing important insights for the formulation of telework-related policies.</p>

DOI： 10.2208/jscejj.24-20131

Open Access

CiNii Research

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

<p>This study analyzed contributing variables affecting driver’s injury severity level, distinguished by the degree of negligence, in the crash of 4-wheeled vehicles at intersections in Aichi prefecture. To investigate the heterogeneity of thresholds, a hierarchical ordered probit model was constructed using the crash data from 2016 to 2020 combined with other data, such as the regional characteristics data and road-specific data. The estimation results showed that ages of the other party, vehicle size differences, collision directions, dim night conditions and land use significantly affected the injury severity level. In addition, the significant variables at the thresholds revealed the factors that partially influence the injury severity level, such as the age of the party, weather and time of day.</p>

DOI： 10.2208/jscejj.24-20019

Open Access

CiNii Research

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.eastsj.2024.100141

Open Access

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.trf.2024.06.009

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.trf.2024.05.019

Open Access

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Eastern Asia Society for Transportation Studies  

<p>The COVID-19 pandemic has accelerated changes in work styles, particularly leading to an increase in teleworking. This increase has the potential to affect transportation and urban development. In Japan, as telework is gaining popularity with more companies implementing telework systems, the choice of workplaces has become diverse. This study investigates factors influencing workers’ time allocation among different workplaces, such as offices, satellite offices, and homes. A time allocation model is applied to the data collected by the web-based survey, which includes social demographics, evaluation of the work environment, and psychological factors related to work-life balance. The estimation results indicate that socio-demographic attributes, job type, work characteristics, work efficiency, work-life interruption, recreation intention, and work environment satisfaction significantly affect the time allocation among different workplaces.</p>

DOI： 10.11175/easts.15.179

Open Access

CiNii Research

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.3390/su16103994

Open Access

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1109/TITS.2023.3310213

Open Access

Web of Science

Scopus

Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.1109/ITSC57777.2023.10421864

Web of Science

Scopus

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1177/03611981221143378

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：The City Planning Institute of Japan  

<p>The COVID-19 pandemic and the resultant preventive measures worldwide have accelerated a change in the way millions of people work. Telework became necessary to prevent the spread of coronavirus and reduce office workers’ health risk. The change in employees’ workstyle may directly impact commuters’ travel behavior, which affects individuals’ residential area choices and companies’ office location choices, ultimately affecting urban development and transportation infrastructures. This research aims to investigate preferences for telework among Japanese employees and, in hybrid workstyles, identify the factors that affect the best trade-off between commuting-based work and telework. A web-based questionnaire collected data which was analyzed using ordered probit modeling. Results revealed that 25% of non-telecommuters want to switch to telework and that the number of workers who want 100% telework increased from 4.9% to 8%. Regression analysis showed a strong influence of socioeconomic and demographic characteristics on the choice between commuting and ICT-based work. Results of this study make it possible to understand office workers’ intentions to work remotely and predict how this will affect economic activity distribution within urban areas. It is also possible to consider an actual case of the implementation of ICT infrastructure for specific segments of society.</p>

DOI： 10.14398/urpr.10.179

CiNii Research

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1177/03611981221110565

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1080/15472450.2022.2086805

Web of Science

Scopus

PubMed

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Eastern Asia Society for Transportation Studies  

<p>Before the final advent of Robo-taxi, careful preparations for integrating the Robo-taxi into society and understanding how travelers value the Robo-taxi against other travel modes are indispensable. To this end, a stated preference (SP) survey was conducted to understand people’s travel mode choice behavior for commuting, shopping, and hospital visiting. Besides, a reveal preference (RP) survey was supplemented to improve the robustness of parameter estimation. We investigated the effect of the socio-demographic, travel attribute, Robo-taxi feature, and latent variables on the mode choice behavior for the three typical travel purposes by the hybrid choice model. The results showed that old people prefer using Robo-taxi for commuting and hospital visiting, while not for shopping; the high ride-sharing rate of Robo-taxi will impede the willingness to use for shopping; reliability, perception of personal benefit as well as social benefit exert positive effect on Robo-taxi usage across all purposes.</p>

DOI： 10.11175/easts.14.1019

Open Access

CiNii Research

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.eastsj.2022.100063

Open Access

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.tra.2021.10.004

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.5198/jtlu.2021.1763

Open Access

Web of Science

Scopus

Language：English   Publishing type：Research paper (conference, symposium, etc.)   Publisher：The City Planning Institute of Japan  

In this study, the risk factors of bicycle accidents at intersections are analyzed, considering intersections geometric features and bicycle road in the central business district area of Nagoya-city, Japan, between the years 2006 and 2015. From the basic descriptive statistics, bicycle accidents frequently occurred at intersections: 79% in Nagoya and 77% in the study area. To evaluate bicycle road effects, the data was divided into three time periods, before and after the bicycle roads were introduced in 2008 and 2011. The negative binomial count model is used to identify the significant explanatory variables on bicycle accident occurrences at intersections. From the estimated results, wider intersections, intersections with a stop sign on all arms, and intersections that have pedestrian signals on some of the arms have a high risk of bicycle accident occurrences. Comparatively, intersections with pedestrian signals at each of the arms and intersections with stop signs on some arms with traffic signals on the other arms display to have less bicycle accident occurrences. Concerning bicycle road effects, the nearest intersections from the Fushimi street bicycle road, have significantly less bicycle accident occurrences, whereas those nearest from the Sakura street bicycle road have higher occurrences. Finally, an intersection design that contributes to the prevention of bicycle accidents was proposed.

DOI： 10.11361/cpijchubu.31.0_31

Open Access

CiNii Research

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.eastsj.2020.100022

Open Access

Scopus

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Eastern Asia Society for Transportation Studies  

<p>The effects of the opening of two urban railway lines on residential gentrification in Nagoya, Japan, are separately investigated. The difference-in-differences model, a quasi-experimental model, is applied to explore the possible causal relationship between rail investments and residential gentrification. Two rail transit lines, which consist of subway and elevated railway, have been opened in the same year in a period of economic downturn. The analysis results reveal that these railway lines located in different areas have achieved their own geographic scale of influence. Furthermore, the analysis points that the railway line located in the center of Nagoya produces a significant change in household income in the nearby neighborhoods, while evidence of transit-induced residential gentrification is not found for the suburb of Nagoya.</p>

DOI： 10.11175/easts.13.463

CiNii Research

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.3390/su11164295

Open Access

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.5198/jtlu.2019.1534

Open Access

Web of Science

Scopus

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.3390/su11092621

Open Access

Web of Science

Scopus

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： https://doi.org/10.2208/jscejd.63.302

Open Access

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： https://doi.org/10.1016/j.tra.2003.11.004.

Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： https://doi.org/10.2208/journalip.19.513

Open Access

Event date： 2024.5

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：北海道大学   Country：Japan  

Event date： 2024.5

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：北海道大学   Country：Japan  

Event date： 2024.5

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：北海道大学   Country：Japan