Degrees: Ph.D. in
Economics, University of Illinois at Urbana-Champaign; B.A. in
Economics (minor in Computer Science), University of Minnesota at Duluth;
Diploma in Electronic and Communication Engineering, Singapore Polytechnic.
Professor, The W.A. Franke College of Business, Northern
Arizona University, since 2011; Associate Professor, The W.A. Franke College of Business,
Northern Arizona University, 2004-2010; Assistant Professor, The W.A.
Franke College of
Business, Northern Arizona University, 2001-2003; Lecturer, Department of Economics, University of Illinois at Urbana-Champaign,
Assistant Professor, Department of Economics, University of Houston, 1989-1997; Visiting Assistant Professor, Department of Economics, University of Illinois at Urbana-Champaign, 1994-1995.
Specialization: Econometric Theory, Applied Econometrics, International Trade and Finance, Urban
and Regional Economics, Computational Statistics, Computer Simulations.
"Using Quantile Smoothing Splines to Identify
Employment Subcenters in a Multicentric Urban Area", (with Steven Craig),
of Urban Economics, 49, 2001, 100-120.
"COBS: Qualitatively Constrained Smoothing via Linear Program", (with X. He),
Computational Statistics, 14, 1999, 315-337.
"Quantile Splines with Several Covariates", (with X. He), Journal of Statistical Planning and Inference
, 75, 1999, 343-352.
"Bivariate Quantile Smoothing Splines", (with X. He and S. Portnoy),
Journal of the Royal Statistical Society (B), 60, 1998, 537-550.
"A Remark on Bartels and Conn's Linearly Constrained Discrete L1 Algorithm",
(with R. Koenker), ACM Transaction on Mathematical Software, 22, 1996, 493-495.
"An Algorithm for Quantile Smoothing Splines", Computational Statistics and Data Analysis,
22, 1996, 99-118.
"Finite Sample Properties of Adaptive Regression Estimators", Econometric Review, 14, 1995, 267-297.
"Tests for Normality Using Estimated Score Function", (with A. Bera),
Journal of Statistical Computation and Simulation,
52, 1995, 273-287.
"Quantile Smoothing Splines", (with R. Koenker and S. Portnoy), Biometrika, 81, 1994,
"Smoothing Spline Score Estimator", SIAM, Journal of
Scientific Computing, 15, 1994, 1003-1025.
"A Large Sample Normality Test Using the Score
Function", (with A. Bera), American Statistical
Association Proceeding of the Business and Economic Statistics Section, 1993,
"Nonparametric Estimation of Conditional Quantile Functions", (with R. Koenker
and S. Portnoy), in Statistical Data Analysis Based on the L1 Norm and Related Methods, ed. Yadoleh Dodge, North-Holland,
"Computing Quantile Smoothing Splines", (with R. Koenker), Computing Science
and Statistics, 24, 1992, 385-388.
"Quantile Smoothing Splines", (with R. Koenker), in Nonparametric
Statistics and Related Topics, ed. A.K.Md.E. Saleh,
"Forecast Comparison of Exchange Rate Models with Kalman Filter", (with A. Heidari),
Technological Forecasting and Social Change, 41, 1992, 435-443.
"XploRe'-ing the World of Nonparametric Analysis", (with R. Sickles),
Journal of Applied Econometrics, 5, 1990, 293-298.
Undergraduate Courses: “Principles
of Economics”, “Principles
of Microeconomics”, “Intermediate Microeconomic Theory”, “Statistics for
Business and Economics”, “Intermediate Business Statistics”, “Introduction
to Empirical Economics”, “Introduction to Econometrics”.