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. To use of panel date makes the researchers think about whether inefficiency represented by the one-sided part of the error term varies true time or is constant true time. This paper use techniques, time varying and time invariant relating to estimation of stochastic production function and of technical effiency in order to analyze the production performance of rail road modal interchange terminal in Italy.