Shiferaw Gurmu  Associate Professor of Economics    Selected Recent Publications and Research in Progress:     “Premarital Birth among Young Hispanic Women: Evidence from Semi-parametric Competing Risks Analysis,” with Jose Canals-Cerdá, forthcoming, Atlantic Economic Journal. [Paper] “The Knowledge Production Function for University Patenting,” with Paula Stephan and Grant Black, forthcoming, Economic Inquiry. “Patents, R&D and Lag Effects: Evidence from Flexible Methods for Count Panel Data on Manufacturing Firms,” with Fidel Perez-Sebastian, forthcoming, Empirical Economics. [Paper] {Web Tables} “A Bivariate Zero-Inflated Count Data Regression Model with Unrestricted Correlation,” with John Elder, Economics Letters, 100(2), 245-248, 2008. [Link via ScienceDirect] {Web Appendix} “Chewing Tobacco, Smoking and Health Knowledge: Evidence from Bangladesh,” with Mohammad Yunus, Economics Bulletin 9(10), 1-9, 2008. [Link] “Does Residential Location Matter to the Employment of TANF Recipients? Evidence from a Dynamic Discrete Choice Model with Unobserved Effects,” with Keith R. Ihlanfeldt and William J. Smith, Journal of Urban Economics 63 (1), 325-351, 2008. [Link via ScienceDirect] {Web Tables} “Semiparametric Competing Risks Analysis,” with Jose Canals-Cerdá, Econometrics Journal 10 (2), 193—215, 2007. [Link] {Web Figures and Tables} “A Simple Bivariate Count Data Regression Model,” with John Elder, Economics Bulletin 3 (11), 1-10, 2007. [Link] “Who’s Patenting in the University? Evidence from a Survey of Doctorate Recipients,” with Paula Stephan, A.J. Sumell, Grant Black, Economics of Innovation and New Technology 16 (2), 71-99, 2007. [Link] {Web Tables} Web page appendix for “Paratransit Demand for Disabled People'' with Peter Bearse, Carroll Rapaport, and Steven Stern, Transportation Research Part B, Vol. 38: {Web Page Tables} {Web Page for “Fixed Effects” Appendix} “Recent Developments in Event Count Models: A Survey,'' with P. K. Trivedi, University of Virginia Thomas Jefferson Center Discussion Paper #261. [Paper] Appendix for “Semiparametric Estimation of Count Regression Models” with P. Rilstone and S. Stern, Journal of Econometrics, Vol. 88. {Web Appendix} “TANF Program Reentry among Recent Leavers,” with Joey Smith. “Semiparametric Bayesian Approach to ZINB with an Application,” with Pulak Ghosh. “Estimation of Multivariate Count Regression Models with Applications to Health Care Utilization,”with John Elder. “A Hausman Test Based on the Difference Between Fixed Effects Two-Stage Least Squares and Error Components Two-Stage Least Squares”.     Vita