0 Noshir Contractor <p>Professor Contractor is Director of the <a href="http://sonic.northwestern.edu/">Science of Networks in Communities (SONIC)</a> Research Group at Northwestern University. He is investigating factors that lead to the formation, maintenance, and dissolution of dynamically linked social and knowledge networks in a wide variety of contexts, including communities of practice in business, science, and engineering, public health networks, and virtual worlds.</p> http://nosh.northwestern.edu/ trustee