14. The computer-implemented method of claim 13 , wherein said iterative process further comprises calculating a new current timing factor in dependence upon said calculated loss factor.
14. The computer-implemented method of claim 13 , wherein said iterative process further comprises calculating a new current timing factor in dependence upon said calculated loss factor. 15. The computer-implemented method of claim 14 , comprising reducing the timing factor if the calculated loss factor is greater than the calculated loss factor from a previous iteration of the iterative process, and maintaining the timing factor at its current value if the calculated loss factor is less than the calculated loss factor from the previous iteration of the iterative process.