Technical efficiency with several stochastic frontier analysis models using panel data

The paper discusses technical efficiency analysis of Italian rail terminals for a panel data from 2007 to 2011 considering variables related to production factors with a dynamic vision over time. The use of panel data makes the researchers investigate whether inefficiency represented by the one-sided part of the error term varies or is constant over time. This paper uses techniques, time varying and time invariant, relating to the estimation of stochastic production functions and of technical efficiency in order to analyze the production performance of rail-road modal interchange terminals in Italy.