introduction of a road bridge over the Zambezi river, in August 2009 between Caia and Chimuara, with the simultaneously completed … rehabilitation of the railway bridge between Vila de Sena and Mutarara, which jointly create variation in optimal trading itineraries … transport costs, averaged over itineraries, from 17% to 42% (ATT). Results are shown to be robust for the non-random bridge …

orhistorical and Monte Carlo simulation methods. Although these approaches to overall VaR estimation have receivedsubstantial … proposed estimation approach pairs intuitiveappeal with computational efficiency. We evaluate various alternative estimation …

Estimation of the volatility of time series has taken off since the introduction of the GARCH and stochastic volatility … unobserved stochastic volatility, and the varying approaches that have been taken for such estimation.In order to simplify the … comprehension of these estimation methods, the main methods for estimating stochastic volatility are discussed, with focus on their …

Estimation of the volatility of time series has taken off since the introduction of the GARCH and stochastic volatility … unobserved stochastic volatility, and the varying approaches that have been taken for such estimation. In order to simplify the … comprehension of these estimation methods, the main methods for estimating stochastic volatility are discussed, with focus on their …