Server selection issues for Web-based applications in such an environment have been widely addressed; the selection is mostly based on proximity measured using packet delay.
It can work either by pairing devices that share a Wi-Fi network, or based on proximity of devices using Bluetooth cues (and in Bluetooth range).
Depending on location of the participant residence, this limitation could preclude considering distances of < 1.0 mile (1,609 m) in an exposure metric based on proximity to pesticide use.
We estimated exposures at the individual level, for a population-based cohort using both monitor-based methods and land use regression models based on proximity to traffic sources, land use, population density, and topographic features.
The Wind Atlas and the resource grid have been calculated, especially in the high wind resource areas, selecting appropriate measurements stations and using criteria based on proximity, similarity and ruggedness index.
Some cell phone detectors are sensitive enough to allow teachers to walk around the classroom and identify active cell phone use based on proximity.
