z = r[:priv]
privileges = {}
15.downto(0) {
  |i|
  if(z >= 2 ^ i)
    privileges[i+1] = 1
    z = z - 2 ^ i
  else
    privileges[i+1] = 0
}

privileges.each {
  |key, value|
  if value == 1
    users_institutions_privileges << {
      :user_id => r[:id],
      :institution_id => r[:pio_institution],
      :privilege_id => key,
      :sync_status => r[:sync_status]
    }
  end
}