Visualization tools offer a dynamic and interesting means of interacting with large data sets and information found on the web, however users cannot always employ these tools to their maximum potential.  My research focuses on investigating user interaction with information structures including web-based visualizations, clusters, socially generated representations, and mobile visualizations for information retrieval.  I teach graduate courses in information visualization, information architecture, and information technology. I am Chair of the LIS Doctoral Studies Program and we welcome inquiries from potential applicants about our doctoral program.