In the early stages of the COVID-19 pandemic, the Japan government could not impose
strong restrictions such as lockdowns. Since there has been no such nation-wide behavioral …

The technology-driven application of big data is expected to assist policymaking towards
sustainable development; however, the relevant literature has not addressed human welfare …

COVID-19 is one of the worst global health crises in a century. Japan confirmed its first case
of COVID-19 in mid-January and declared a state of emergency in April and May 2020 …

The estimation of temporary populations is a well-established field, but despite growing
interest they are yet to form part of the standard suite of official population statistics. This …

The changes in human behaviour associated with the spread of COVID-19 infections have
changed the urban environment. However, little is known about the extent to which they …

We visualize the rates of stay-home for residents by region using the difference between day-
time and night-time populations to detect residential areas, and then observing the numbers …

Air pollution is one of the greatest challenges cities are facing today and improving air
quality is a pressing need to reduce negative health impacts. In order to efficiently evaluate …

Real-time spatiotemporal population data is attracting a great deal of attention for
understanding crowd movements in cities. The data is the aggregation of personal location …

The COVID-19 pandemic has accelerated the introduction of remote work as one way to
ensure employee safety and reduce the amount of interpersonal contact while continuing …

This study aims to examine the gender gaps in the use of urban space in Seoul, Korea, to
provide empirical evidence for urban planning for gender equality. We analyzed daily …