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EN
This study examined the direct/indirect long-run relationships and dynamic interactions between public investment (PI) and output performance in Nigeria using annual data spanning 1970-2010. A macro-econometric model derived from Keynes’ income-expenditure framework was employed. The model was disaggregated into demand and supply sides to trace the direct and indirect effects of PI on aggregate output. The direct supply side effect was assessed using the magnitude of PI multiplier coefficient, while the indirect effect of PI on the demand side was evaluated with marginal propensity to consume, accelerator coefficient and import multiplier. The results showed relatively less strong direct effect of PI on aggregate output, while the indirect effects were stronger with the import multiplier being the most pronounced. This is attributed to declining capital expenditure, poor implementation and low quality of PI projects due to widespread corruption. By and large, we concluded that PI exerted considerable influence on aggregate output.
PL
W pracy przedstawiono, w jaki sposób Unia Europejska wpływa na funkcjonowanie polskiej gospodarki. Zaprezentowano wielorakie znaczenie pomocy unijnej, która oddziałuje pozytywnie na funkcjonowanie kraju. Ukazano, że fundusze unijne mają niewątpliwy wpływ na rozwój oraz funkcjonowanie zarówno gospodarki międzynarodowej, jak i krajowej, szczególnie gospodarki regionalnej. Opracowanie zostało przygotowane na podstawie literatury przedmiotu metodą analizy i syntezy zebranego materiału.
EN
The paper presents the EU affects the functioning of the Polish economy. Presented multiple importance of the EU aid, which has a positive effect on the functioning of the country. It shows that EU funds have a definite influence on the development and functioning of both the international and the country economy, particularly the regional economy. The study was prepared on the literature method of analysis and synthesis of the collected material.
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