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Vision-Based Localization in Dense Urban Environments: A Case Study of an Urban Village in China
Announce Type: new Abstract: Urban villages, the widespread informal settlements which have emerged as a result of rapid urbanization, are now major residential hubs for migrant workers in large cities in China. The dense arrangement of buildings in these areas often leads to unreliable GPS signals, while incomplete mapping data further impairs accurate route planning and navigation. These issues not only hinder everyday mobility but also pose significant challenges for emergency response,...
Three key vital signs make up the "urban pulse" of a city
People often speak metaphorically of the heartbeat or pulse of a city, but according to the authors of a new paper published in the Proceedings of the National Academy of Sciences, cities do indeed have an "urban pulse"—an indication of urban "metabolic activity" that can be measured to suss out telltale patterns. And those patterns could help inform future public policy around urban planning. The precise definition of urbanization has shifted over the centuries.
Three key vital signs make up the "urban pulse" of a city
People often speak metaphorically of the heartbeat or pulse of a city, but according to the authors of a new paper published in the Proceedings of the National Academy of Sciences, cities do indeed have an "urban pulse"—an indication of urban "metabolic activity" that can be measured to suss out telltale patterns. And those patterns could help inform future public policy around urban planning. The precise definition of urbanization has shifted over the centuries.
Urban Flood Observations: A hand-labeled training and validation dataset of post-flood inundation
arXiv:2604.23066v2 Announce Type: replace Abstract: Urban flooding affects lives and infrastructure worldwide. Mapping inundation in complex urban environments from satellite imagery remains challenging due to limited spatial resolution, infrequent acquisitions, and cloud cover. We present Urban Flood Observations (UFO), a global, hand-labeled dataset of post-flood inundation in diverse urban settings.
Buying a home? Check if you qualify for PMAY Urban 2.0 benefits
Finding or building a home in cities can be expensive, especially for families with limited or moderate income. The Pradhan Mantri Awas Yojana – Urban 2.0 (PMAY-U 2.0), run by the Ministry of Housing and Urban Affairs, is a government initiative designed to make housing more affordable and accessible for eligible urban households. The scheme focuses on improving access to affordable housing for families that fall under the Economically Weaker Section (EWS), Low Income Group (LIG), and Middle...
Global evidence for a consistent spatial footprint of intra-urban centers
Announce Type: replace Abstract: Urban space is highly heterogeneous, with economic and population activities concentrating in localized centers. However, the global organization of such intra-urban centers remains poorly understood due to the lack of consistent, comparable data. Here we develop a scalable geospatial framework using nighttime light observations to identify over 15,000 intra-urban centers worldwide.
Global evidence for a consistent spatial footprint of intra-urban centers
Announce Type: replace-cross Abstract: Urban space is highly heterogeneous, with economic and population activities concentrating in localized centers. However, the global organization of such intra-urban centers remains poorly understood due to the lack of consistent, comparable data. Here we develop a scalable geospatial framework using nighttime light observations to identify over 15,000 intra-urban centers worldwide.
Revisiting urban heat indices in Switzerland using low-cost measurement networks
Announce Type: new Abstract: Urban populations are increasingly exposed to extreme heat events such as heatwaves, which can be exacerbated in cities due to the urban heat island (UHI) effect. With the aim of developing adaptation strategies, recent years have seen a growing interest in deploying high-resolution measurement networks using low-cost devices (LCDs), which enable the evaluation of intra-urban temperature distribution and its impacts at an unprecedented spatial resolution....
Millimeter-Wave UAV Channel Model with Height-Dependent Path Loss and Shadowing in Urban Scenarios
arXiv:2511.10763v2 Announce Type: replace Abstract: Uncrewed Aerial Vehicles (UAVs) serving as Aerial Base Stations (ABSs) are expected to extend 6G millimeter-Wave (mmWave) coverage and improve link reliability in urban areas. However, UAV-based Air-to-Ground (A2G) channels are highly dependent on height and urban geometry. This paper proposes an ABS height-dependent mmWave channel model and investigates whether urban geometry, beyond the standard built-up parameters, significantly affects...
SRUG: Shadow-Guided Relightable Urban Scene with Generation Model
arXiv:2605.24700v3 Announce Type: replace Abstract: Creating relightable urban scenes from images or videos is widely useful but highly ill-posed. Urban environments are typically unbounded and extend beyond the visible regions. As a result, many portions of the scene remain unobserved, yet these invisible regions can cast shadows onto visible areas.