Browsing by Author "Ziramba, Emmanuel"

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    Long-run price and income elasticities of the Namibia aggregate electricity demand
    (Scholarly Resource Centre Limited., 2012) Ziramba, Emmanuel; Kavezeri, Kasnath J.
    This paper estimates the short-run and long-run price and income elasticities of aggregate electricity demand in Namibia over the period 1993q1 to 2010q1. We make use of the bounds testing approach to cointegration within an autoregressive distributed framework, Our empirical results suggest that electricity demand is income elastic, but price inelastic in the long-run.
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    Revisiting the South African aggregate import demand
    ([s.l], 2012) Ziramba, Emmanuel
    This paper examines the long run and short run relationship between South African aggregate imports and expenditure components and the price of imports relative to the price of domestic substitutes (RP) using the bounds test approach. Annual data for the period 1970-2009 are used. The final demand expenditure variable is disaggregated into final consumption expenditure (FCE), investment expenditure (EIG) and exports expenditure (EX). The use of a disaggregated demand variable, as opposed to a single demand variable, is justified by the possibility that each final demand component may have different import contents. The major findings are; first, aggregate import demand is co-integrated with its determinants, second, different components of final demand expenditure have different impacts on aggregate import demand in both the short and long-run periods.
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    Revisiting the South African aggregate import demand : A view from expenditure components
    (University of Stellenbosch, 2012) Ziramba, Emmanuel
    This paper examines the long run and short run relationship between South African aggregate imports and expenditure components and the price of imports relative to the price of domestic substitutes (RP) using the bounds test approach. Annual data for the period 1970-2009 are used. The final demand expenditure variable is disaggregated into final consumption expenditure (FCE), investment expenditure (EIG) and exports expenditure (EX). The use of a disaggregated demand variable, as opposed to a single demand variable, is justified by the possibility that each final demand component may have different import contents. The major findings are; first, aggregate import demand is co-integrated with its determinants, second, different components of final demand expenditure have different impacts on aggregate import demand in both the short and long-run periods.