We present a series of models capturing the non-stationarities and dependencies in the variance of yields on natural gas futures. Both univariate and multivariate models are explored, based on the ARIMA and Hidden-Markov methodologies. The models capture the effects uncovered through various...

The critical nature of the venture capital-entrepreneur relationship is emphasized by the 46.4% exponential growth rate of venture capital investments throughout the 1990s. It is that time in the venture capital cycle between the time the first stage funding is made and the venture capitalist...