My second paper

Since yesterday we are just watching TV and the Katrina's catastroph. It is so sad to see people lost their life. Today is also a very new experience, Amir is called for the Jury. We have a very funny feeling.
Back to work, here is my second paper: http://dx.doi.org/10.1016/j.jconrel.2004.10.026. As said before, I would be more than happy to discuss the contents and get any new idea or suggestion.