function [ gamma ] = BNDRY_GAMMA(t,x,u)
%
% Written by:
% -- 
% John L. Weatherwax                2005-06-15
% 
% email: wax@alum.mit.edu
% 
% Please send comments and especially bug reports to the
% above email address.
% 
%-----

if( x==0.0 ) 
  gamma = 50.0;
else
  gamma = 1-sin(u); 
end