"The Impact of Public and Private R&D on Profit Function Choices of Farmers: Econometric Evidence from State Data, 1960-2004." Presented at the Department of Agricultural and Resource Economics Seminar, Oregon State University, Corvallis, OR, October 1, 2008._x000d_
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"Rising Food and Energy Prices: Projections for Labor Markets 2008-2018 and Beyond." Presented at the Conference on Rising Food and Energy Prices--U.S. Food Policy at a Cross Roads, Oregon State University, Corvallis, OR, October 2, 2008.