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.
Framework of drone study for a multilevel society. Solid arrows indicate that the methods were already applied in multilevel social studies. Broken lines indicate the methodology that is applied in single-level group and not in a multilevel society.
