Abstract: The escalating demand for indoor location-based services has propelled advancements in indoor positioning technologies in which visible light positioning (VLP) standing out for its accuracy ...

Amtrak has made $30 million in accessibility upgrades to five North Dakota stations. The Amtrak Empire Builder stops twice daily at stations on this route between Seattle or Portland and Chicago.

Abstract: GaN-based light-emitting diodes (LEDs), which are regarded as one of the most important alternative light sources for visible light communication (VLC) systems, have been constrained by ...

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