What are the most salient features of the Mexican sugar agroindustry's relative technical efficiency? This paper looks at a very preliminary approach to the relative technical efficiency (RTE) conditions prevailing in the sugar refineries of the country, with the support of an empirical...

This article applies the Hinich portmanteau test to the daily return of the international Arabica Colombian coffee price the period 06/29/1990 to 07/01/2010. By splitting the data in windows and setting the null hypothesis on the time series, H : a stationary pure noise process with zero 0...