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Aggregate Growth (aggregate + growth)

Distribution by Scientific Domains

Business, Economics, Finance and Accounting	80%

Selected Abstracts

Konvergenz- und Wachstumseffekte der europäischen Regionalpolitik in Deutschland

PERSPEKTIVEN DER WIRTSCHAFTSPOLITIK, Issue 2 2007
Wolfgang Eggert
In this period East-German regions have converged, while regional disparities have been increasing in West-Germany. In addition East-German Landkreise have caught up with poor western regions. However the overall gap between rich and poor Landkreise has risen. Economic theory describes a trade-off between regional convergence and aggregate growth. Our empirical findings support this hypothesis. It is shown that the EU's regional transfers speed up convergence, but have a negative impact on long-run aggregate growth. [source]

South African trade policy matters Trade performance and trade policy,

THE ECONOMICS OF TRANSITION, Issue 4 2008
Lawrence Edwards
South Africa; trade policy; trade performance Abstract South African trade policy has exerted a major influence on the composition and aggregate growth of trade. In the Apartheid period, South Africa developed a comparative advantage in capital-intensive primary and manufactured commodities partly because of its natural resource endowments, but also because the pattern of protection was particularly detrimental to exports of non-commodity manufactured goods. By contrast, trade liberalization from 1990 not only increased imports, but by reducing both input costs and the relative profitability of domestic sales also boosted exports. This evidence suggests that additional trade liberalization and policies that afford South African firms access to inputs at world prices could well be part of the strategy to enhance export diversification. [source]

DUAL ECONOMY MODELS: A PRIMER FOR GROWTH ECONOMISTS

THE MANCHESTER SCHOOL, Issue 4 2005
JONATHAN TEMPLE
This paper argues that dual economy models deserve a central place in the analysis of growth in developing countries. The paper shows how these models can be used to analyse the output losses associated with factor misallocation, aggregate growth in the presence of factor market distortions, international differences in sectoral productivity and the potential role of increasing returns to scale. Above all, small-scale general equilibrium models can be used to investigate the interactions between growth and labour markets, to shed new light on the origins of pro-poor and labour-intensive growth, and to explore the role of the informal sector. [source]

Small-angle X-ray scattering study of the smart thermo-optical behavior of zirconyl aqueous colloids

JOURNAL OF APPLIED CRYSTALLOGRAPHY, Issue 3-1 2000
L.A. Chiavacci
The smart thermo-optical systems studied here are based on the unusual thermoreversible sol-gel transition of zirconyl chloride aqueous solution modified by sulfuric acid in the molar ratio Zr/SO4:3/1. The transparency to the visible light changes during heating due to light scattering. This feature is related to the aggregates growth that occurs during gelation. These reversible changes can be controlled by the amount of chloride ions in solution. The thermoreversible sol-gel transition temperature increases from 323 to 343 K by decreasing the molar ratio Cl/Zr from 7.0 to 1.3. In this work the effect of the concentration of chloride ions on the structural characteristics of the system has been analyzed by in situ SAXS measurements during the sol-gel transition carried out at 323 and 333 K. The experimental SAXS curves of sols exhibit three regions at small, medium and high scattering vectors characteristics of Guinier, fractal and Porod regimes, respectively. The radius of primary particles, obtained from the crossover between the fractal and Porod regimes, remains almost invariable with the chloride concentration, and the value (4 Å) is consistent with the size of the molecular precursor. During the sol-gel transition the aggregates grow with a fractal structure and the fractal dimensionality decreases from 2.4 to 1.8. This last value is characteristic of a cluster-cluster aggregation controlled by a diffusion process. Furthermore, the time exponent of aggregate growth presents values of 0.33 and 1, typical of diffusional and hydrodynamic motions. A crossover between these two regimes is observed. [source]