Fig. 2.
(a) the duration and flow domains for different stages of the elevator ride (total duration was 114.1 s), (b) the flow domain considered on the ground floor (floor 1).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.