MILLER LECTURE: Some Developments in the Specification, Estimation and Testing of Geodemographic Models GIS expert Paul Longley will speak this Friday at 4 p.m. in 112 Walker as part of the Department of Geography's Miller Lecture and Coffee Hour series. Longley is a GIS professor and the deputy director of the Centre for Advanced Spatial Analysis at University College London. (Javascript is required to view Mediasite content)