Radical changes in the telecommunications environment are compelling governments to change their approach to policy formulation in the field. In this Comment the author outlines the necessary shifts in approach, and relates them to recent international events. He then focuses on the issues...

Successive administrative policies, overlaid on the traditional communal land tenure system in the Qaukeni area of the Eastern Cape, have had the effect of tying people to the land and creating an environment that severely constrains opportunities for development. This article traces the...

TDF is a live subject, constrained by old confusions and worn out issues. Under a suggested new term 'international data services', which applies itself directly to the problems involved, this paper examines the current environment and addresses the pressing issues. The author discards matters...

By its very nature, transborder data flow is international in scope, since it involves the transfer of data and information across national boundaries. The problems and issues it raises are complex and often sensitive. Many are without precedent and highly protean in character, as the pace of...

For testing lack of correlation against spatial autoregressive alternatives, Lagrange multiplier tests enjoy their usual computational advantages, but the (X2) first-order asymptotic approximation to critical values can be poor in small samples. We develop refined tests for lack of spatial error...

Efficient semiparametric and parametric estimates are developed for a spatial autoregressive model, containing nonstochastic explanatory variables and innovations suspected to be non-normal. The main stress is on the case of distribution of unknown, nonparametric, form, where series...

We show that it is possible to adapt to nonparametric disturbance autocorrelation in time series regression in the presence of long memory in both regressors and disturbances by using a smoothed nonparametric spectrum estimate in frequency-domain generalized least squares. When the collective...

We consider a time series model involving a fractional stochastic component, whose integration order can lie in the stationary/invertible or nonstationary regions and be unknown, and additive deterministic component consisting of a generalised polynomial. The model can thus incorporate competing...

The semiparametric local Whittle or Gaussian estimate of the long memory parameter is known to have especially nice limiting distributional properties, being asymptotically normal with a limiting variance that is completely known. However in moderate samples the normal approximation may not be...

Econometric interest in the possibility of long memory has developed as a flexible alternative to, or compromise between, the usual short memory or unit root prescriptions, for example in the context of modelling cointegrating or other relationships and in describing the dependence structure of...