ECOMOD´2006 International Conference on Regional and Urban Modelling [Economic modelling techniques applied to regional and urban issues] Free University of Brussels, 1-3/ 6/ 2006 Primary topic: Urban issues; Secondary topic: Developing countries Urban clusters as strategy for productive restructuring and urban regeneration: from San Francisco Mission Bay to Sao Paulo railroad brownfield Carlos Leite Arch.; M.Sc.; Ph.D. [Sao Paulo]; Professor at the Postgraduation Program in Architecture & Urbanism, Mackenzie Presbyterian University, Sao Paulo; Visiting professor at the Cal Poly University [California; Fall Term 2004]; Coordinator of the Urban Clusters Research Group [cleite@educatorium.com ; www.leitebrooke.com.br/leite_clusters_1.html ] Key-words: Innovative environments; Productive restructuring; Urban regeneration; Clusters; Technopoles; Sustainable redevelopment; Deindustrialization & Reindustrialization; Wastelands; Brownfields; Terrain vague; LED