It is, as far as I know, the only quality distance learning program at the doctoral level. My research interest is to study the disadvantages of size in organizations. The doctoral dissertation sheds some light on these issues by using transaction cost theory to explain and quantify diseconomies of scale. It builds on the original work of academics such as Ronald Coase, Oliver Williamson, Douglass North, and Scott Masten. The dissertation gives a fuller description.
Statistical data is available for downloading as well.
In addition, and somewhat related, I am interested in understanding why management consultants exist. I have written a working paper on this topic, once again using transaction cost theory as an organizing framework.