In response to equity concerns surrounding the spatial distribution of CO2 emissions and the assumptions of CO2 convergence within some climate models, this paper examines the convergence of CO2 emissions within the OECD over the period 1870-204. More specifically, using the Local Whittle...

The expectation hypothesis suggests there exists long run equilibrium of interest rate term structure. Two theoretical approaches proposed by Campbell and Shiller (1987) and Hall el al. (1992) suggest that the term spread of long-term and short-term interest rates should be a stationary I(0)...

We propose to use a variant of the local polynomial Whittle estimator to estimate the memory parameter in volatility for long memory stochastic volatility models with potential nonstation- arity in the volatility process. We show that the estimator is asymptotically normal and capable of...

This paper extends the local polynomial Whittle estimator of Andrews & Sun (2004) to fractionally integrated processes covering stationary and non-stationary regions. We utilize the notion of the extended discrete Fourier transform and periodogram to extend the local polynomial Whittle estimator...