Porter's 2001 'strategy and the Internet' paper is a key article in the field of on-line strategy. This paper assesses Porter's views in the light of current and past developments. Porter's paper, whilst still thought provoking in many ways, now shows some weaknesses, and in places is no longer...

This dissertation includes three essays on hedging the interest rate and credit risks of Mortgage-Backed Securities (MBS).Essay one addresses the problem of how to efficiently estimate interest rate sensitivity parameters of MBS. To do this in Monte Carlo simulation, we derive perturbation...