In this paper, we introduce a new concept of volumes difference function of the projection and intersection bodies. Following this, we establish the Minkowski and Brunn-Minkowski inequalities for volumes difference function of the projection and intersection bodies.

Localization is crucial for the monitoring applications of cities, such as road monitoring, environment surveillance, vehicle tracking, etc. In urban road sensor networks, sensors are often sparely deployed due to the hardware cost. Under this sparse deployment, sensors cannot communicate with each other via ranging hardware or one-hop connectivity, rendering the existing localization solutions...

We propose functional specifications for a localized verbal wayfinding aid for blind pedestrians, in simple and structured urban areas. A user-centered design approach, that is, the analyses of route descriptions produced by blind pedestrians, allowed first to evidence verbal guidance rules and then to elaborate route descriptions of unfamiliar paths; their efficiency was confirmed. We found th...

OBJECTIVE Pedestrian and cyclist collisions comprise a significant proportion of preventable injury. In urban settings, collision rates have been linked to various socio-demographic factors. We sought to determine whether neighbourhood marginalization affects pedestrian and cyclist collisions in the Greater Toronto Area. METHODS For 114 intersections, pedestrian and cyclist collisions were ex...

Objective measures of environmental attributes have been used to understand how neighborhood environments relate to physical activity. However, this method relies on detailed spatial data, which are often not easily available. Walk Score® is a free, publicly available web-based tool that shows how walkable a given location is based on objectively-derived proximity to several types of local dest...

The ever-increasing travel demand outpacing available transportation capacity especially in the U.S. urban areas has led to more severe traffic congestion and delays. This study proposes a methodology for intersection signal timing optimisation an street network aimed minimise intersection-related delays by dynamically adjusting green splits of plans designed intersections each hour day respons...

Work zones generate significant congestion in urban centers, yet the influence of various capacity factors arterials and intersections are poorly understood. This paper analyzes following on arterial intersection work zone from 22 intersections: heavy vehicle flow, percentage, length, maximum speed limit, entrance lane width, left turn volumes, exit width reductions, length width. An was modele...

Investigating the characteristics of urban expansion is helpful in managing the relationship between urbanization and the ecological and environmental issues related to sustainable development. The Defense Meteorological Satellite Program/Operational Line-scan System (DMSP/OLS) collects visible and near-infrared light from the Earth’s surface at night without moonlight. It generates effective t...