Shiferaw Gurmu  Professor of Economics    Selected Recent Publications and Research in Progress:     “The Knowledge Production Function for University Patenting,” with Paula Stephan and Grant Black, Economic Inquiry 48(1), 192-213, 2010. [Web Page Tables] “Premarital Birth among Young Hispanic Women: Evidence from Semi-parametric Competing Risks Analysis,” with Jose Canals-Cerdá, Atlantic Economic Journal 36(4), 421-440, 2008. [ Working Paper] “Patents, R&D and Lag Effects: Evidence from Flexible Methods for Count Panel Data on Manufacturing Firms,” with Fidel Perez-Sebastian, Empirical Economics 35(3), 507-526, 2008. [ Working 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. “Bayesian Approach to Bivariate Zero-Inflated Ordered Probit  Regression Models, with an Application to Tobacco Use,”  with Getachew A. Dagne “Flexible Bivariate Count Regression Models with Unrestricted Correlation,” with John Elder. “Mother’s Bargaining Power, Gender Ratio Preferences and Child Schooling,” with Solomon T. Tesfu. “Illness and Treatment Choice in Urban and Rural Ethiopia” with Solomon T. Tesfu.     Vita