There are 6 files in this directory.
M files:
  BREAK.M
  PV_EXP.M
  PV_SUP.M
Data files:
  ip.txt
  hours.txt
  workers.txt

Make sure they are in the working directory of Matlab and run breaks.m. The results will be written in an ASCII file named ipout.txt and the figure will be saved in several eps files. 
  