Graduate School of Engineering
Kyushu University
Research Interests
Infrastructure (PC)
■ Capital city relocation in Indonesia
Indonesia was planning to relocate the capital city from Jakarta to East Kalimantan (although the plan has been postponed due to COVID-19). There are five reasons why this relocation should be beneficial for Jakarta:
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it will ease the heavy traffic congestion,
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it will help slow down environmental degradation such as air and water pollution,
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it will help make Jakarta less vulnerable to natural disaster risks such as earthquakes and/or tsunamis, volcanos, and floods,
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it will mitigate the levels of economic and population concentration, and
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it will relieve land subsidence caused by the pumping of groundwater.
The as-yet-unnamed new capital city (NCC) in East Kalimantan, unlike Jakarta, is located in the geographical center of Indonesia, which is expected to enhance the national motto Bhinneka Tunggal Ika, or unity in diversity, with its 300 ethnic groups; it would also reduce the likelihood of severe impacts from natural disasters compared to most areas in Indonesia.
Author
The relocation will bring benefits to Indonesia in total due to the improved PC and HC, although NC will decline.
Author
■ Central business district (CBD)
A central business district (CBD) is the commercial and business center of a city. The bid rent theory (Alonso 1964; Fujita 1989) explains that land prices are proportional to the inverse distance from the CBD. Empirically, Glumac et al. (2019), Yuan et al. (2020), Diewert and Shimizu (2016) show the importance of CBD using the hedonic approach.
To capture the spatio-temporal dynamics in city structures throughout the period, we define the time-variant CBD score at the place i and time t, as follows:
where s denotes the train station, S is the total number of stations in the study area, passengerst is the average number of daily passengers, and distsi is the Euclidean distance between the centroid of place i and station s.
