Dr Michael D. Cohen (22 March 1945 - 2 February 2013) was the William D. Hamilton Collegiate Professor of Complex Systems, Information and Public Policy at The University of Michigan.
Sources
http://si.umich.edu/newsandevents/press/beloved-umsi-professor-michael-cohen-passes-away
https://www.facebook.com/Michael.Cohen.Memorial
http://www.annarbor.com/news/longtime-university-of-michigan-professor/
http://en.wikipedia.org/wiki/Michael_D._Cohen
http://orgtheory.wordpress.com/2013/02/04/michael-cohen/
http://omtweb.org/omt-blog/53-main/477-michael-cohen-remembrance