This paper introduces a model which identifies the economic activity of each local economy (location) and observes the time distance between each pair of locations as well as the average time distance between sub locations in each local economy. The study focuses on five categories of firms:...

This paper presents a critical analysis of the SSG and a simulation of its effects for Brazilian sugar exports to countries such as the United States (US) and the European Union (EU) bloc. A first stage involved the identification of tariff lines (TL) for the EU and the US sugar imports from...

The production of ethanol has increased in United States and Brazil in recent years, because of incentives to reduce gas consumption. In Brazil, there is a big program to use ethanol both as a single fuel or an additive to gas. In US, the incentive is to use ethanol combined to gas in proportion...