Uma Análise da Demanda por Combustíveis Através do Modelo Almost Ideal Demand System para Pernambuco

The fuel market has been widely studied at several perspectives, from the issue of asymmetry and transmission prices, cartels, dynamics linked to price fluctuations in the international economy, demand systems, among others. Thus, this paper aims to estimate a demand system for regular gasoline, hydrous ethanol and diesel via (LA-AIDS) Linear Approximation Almost Ideal Demand System with quarterly time series data for the period 2001-2015 in Pernambuco State (Brazil). The estimates were made using (SUR) Seemingly Unrelated Regressions. The results are similar to those observed in the literature, pointing to the inelasticity-price of demand for gasoline and diesel, which is expected given the essentiality of the assets. It was also observed that the demand for ethanol is elastic because of Marshallian price elasticity greater than one in absolute value, leading to the results already found in other studies

Competitividade e Isomorfismo: análise do perfil estrutural e financeiro-contábil de grandes cooperativas agropecuárias brasileiras

Due to changes in agribusiness, agricultural cooperatives, guided by local operations, and with low added value, have been looking for new ways of structuring. We aimed to identify the forms of structuration and financial-accounting peculiarities of agricultural cooperatives with higher volume of sales in the Brazilian context under the point of view of noncooperatives in the same segment. The work started with a documentary analysis and an accounting technique, named vertical analysis; in the next step, we used Mann-Whitney test to compare the formative lines of DRE of the a set of 15 cooperatives and 14 non-cooperative companies discriminated as belonging to organizations with higher sales in agricultural production in 2013. The results confirm the extent of the cooperatives structure in relation to the business portfolio, given the remarkable activities in concentric and conglomerate diversification. We observed the competitive parity between the business segments analyzed, mainly because there were no differences in the final rates of “profitability” when we compare the two cases. In addition, we can apparently refute the idea that this competitive parity is given by an orientation excessively directed to the market, at the expense of a social orientation, given the differentiating points externalized