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.
Profiles partition for feature extraction. The profile is divided into two sections: first for the region of the profile that is not highly attenuated (blue line) and second for the part where the most significant signal decay occurs (red solid line).
