Yazar "Agazade, Şeymur" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Analysis of the relationship between Cotton Production and Prices by using Koyck Approach in Turkey
    (2021) Agazade, Şeymur
    In this study, the relationship between the amount of cotton production and real cotton prices was investigated for Turkey in the framework of Koyck approach, one of the distributed lag models. For this purpose, data for the 19 cotton grown provinces of Turkey and panel data methods were used. Cotton real prices were calculated using the nominal cotton prices of each province and the consumer price index of Turkey in general. Panel data crosssectional dependency analyses show that there are positive correlations between both the amount of cotton production and real price series of different provinces. This correlation was found to be 21.6% for cotton production and 90.4% for real cotton prices. Findings of panel unit root tests supported that cotton production and cotton real price series were stationary. This result supports that both series return to their long run levels after external shocks. Taking into account the problems related to the basic assumptions of the fixed effects model, the cotton production function was estimated in the context of an approach, which is based on robust standard errors and provides efficient results in the presence of autocorrelation, heteroscedasticity and cross-sectional dependence. The findings of the panel data fixed effect model estimated within the framework of the Koyck approach showed that a 1% change in the real cotton price affected cotton production in the same direction by 0.31% in the same year. Furthermore, this change in real cotton price affects cotton production by 0.26% and 0.22% after 1 and 2 years, respectively. Finally, the average time required to reflect the real cotton price changes on the production was calculated as 4.99 years.
  • Küçük Resim
    Öğe
    Service export and productivity: Evidence from OECD panel data
    (2021) Agazade, Şeymur
    This study aims to investigate the relationship between service exports and productivity in 27 OECD countries by using a panel dataset for the years 1995-2018. In the theoretical context, this relationship is basically handled by the learning-by-exporting and self-selection mechanisms. Additionally, product life cycle and technological gap theories also have implications related to the export and productivity association. In the study, after detecting the cross-sectional dependence, the stationarity characteristics of the exports and productivity series were investigated by Pesaran's (2007) panel unit root tests. The findings of Westerlund (2007) panel co-integration test indicated that there is a long-run equilibrium relationship between service exports and productivity. Common correlated effects estimators also supported this finding and showed that productivity affects exports positively in both short and long run. Finally, Dumitrescu and Hurlin's (2012) heterogeneous panel causality tests showed that there is a unidirectional causal relationship running from productivity to service exports. The findings support the predictions of product life cycle theory and technological gap theory regarding the exports and productivity linkage and indicate the validity of the self-selection mechanism for OECD countries' service exports.