“…PEATSim is a simulator in the sense that it is a mathematical-based system that attempts to find analytical solutions to problems, given a set of parameters, data, and initial conditions. Previous versions of the PEATSim model have been used in numerous studies (see Blayney et al, 2006;Dyck et al, 2008;Langley et al, 2003Langley et al, , 2005Langley et al, , 2006Stillman et al, 2005;Zahniser et al, 2010;Valdes et al, 2010, Meade et al, 2010and Shane et al, 2009). For example, PEATSim was used to analyze global dairy markets, examine the effects of agricultural trade liberalization, estimate the effects of biofuels expansion on global agricultural production and trade, and analyze the impacts of biofuel mandates on worldwide grain, livestock, and oilseed sectors (see Peters et al, 2008Peters et al, , 2009Peters et al, , 2010and Stillman et al, 2007and Stillman et al, , 2008aand Stillman et al, , 2008b.…”