This study uses a rich dataset of 85 market pairs between January 2000 andOctober 2008 for Kenya, Tanzanian and Uganda, the three largest member countries ofthe East Africa Community, to analyze the factors determining national and cross-nationalmaize price transmission. Although the three...

We study quantile regression estimation for dynamic models with partially varying coefficients so that the values of some coefficients may be functions of informative covariates. Estimation of both parametric and nonparametric functional coefficients are proposed. In particular, we propose a...

A system of vector semiparametric nonlinear time series models is studied with possible dependence structures and nonstationarities in the parametric and nonparametric components. The parametric regressors may be endogenous while the nonparametric regressors are strictly exogenous. The...