Spatial and socioeconomic structures of geographical units produce various inter-regional
relations, which impose a direct effect on origin–destination flows. Currently, most flow …

Trip distribution laws are basic for the travel demand characterization needed in transport
and urban planning. Several approaches have been considered in the last years. One of …

Due to the limitation of data collection techniques and privacy issues, the problem of missing
spatial origin-destination flows frequently occurs. Data imputation provides great support for …

China has built a territory-based formal e-waste recycling system as a response to the global
e-waste challenge. This system created a division of labor between the informal sector and …

Understanding human mobility is crucial for applications such as forecasting epidemic
spreading, planning transport infrastructure and urbanism in general. While, traditionally …

Spatial accessibility is fundamentally related to the functional, economic and social
performances of cities and geographical systems and, therefore, constitutes an essential …

The distance decay function has been attracting attention in diverse disciplines including
transportation studies, spatial planning and urban geography. In particular, much discussion …

For decades, gravitational analysis has been a key instrument in analyzing spatial flows.
Time and again, it has prompted new and challenging research questions. This paper …

We generalized the recently introduced “radiation model”, as an analog to the generalization
of the classic “gravity model”, to consolidate its nature of universality for modeling diverse …

Where do people live, and how has this changed over timescales of centuries? High-
resolution spatial information on historical human population distribution is of great …