Efforts to spur growth in sub-Sahara Africa have been intensified amid structural and institutional constraints. Tax revenue, the chief source of funding for developmental purposes in SSA remains low and unstable. In fact, the SSA sub-region finds it difficult generating tax revenue up to 20 per...

The need for the Ghanaian government to generate enough revenue for development is becoming increasingly crucial in this era of slow growth, growing unemployment and high debt. However, tax revenue performance over the years reveals an unstable pattern. One key factor that has been overlooked in...

This paper investigates the effect of exchange rate volatility on US-UK bilateral trade flows. As part of econometric problems arising from a generated variable, we consider a special case when an ARCH type auxiliary model is used to measure uncertainty in the exchange rate and discuss a...

This paper investigates the effect of exchange rate volatility on US-UK bilateral trade flows. As part of econometric problems arising from a generated variable, we consider a special case when an ARCH type auxiliary model is used to measure uncertainty in the exchange rate and discuss a...

This paper investigates some structural properties of a family of GARCH processes. A simple sufficient condition for the existence of the αδ-order stationary solution of the processes is derived, where α ∈ (0, 1] and δ 0. The solution is strictly stationary and ergodic, and the causal...

In this paper we propose a new multivariate GARCH model with time-varying conditional correlation structure. The approach adopted here is based on the decomposition of the covariances into correlations and standard deviations. The time-varying conditional correlations change smoothly between two...