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.
Parameters of networks: (a) kmax=30, cmax=50; (b) kmax=30, cmax=150; (c) kmax=100, cmax=150; (d) kmax=0.015 N, cmax=0.020 N. (see Table 1 for details of network parameters).
