Browsing by Author "Savranlar, Buket"

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Effect of Economic Policy Uncertainty on Co2 With the Discrimination of Renewable and Non Renewable Energy Consumption
(Pergamon-elsevier Science Ltd, 2024) Atay Polat, Melike; Ilhan, Ozturk; Usama, Al-Mulali; Savranlar, Buket; Polat, Melike Atay; Metawa, Noura; Raboshuk, Alina
The link between policy -related economic uncertainty and the environment has a new and developing literature. In this study, the effects of economic policy uncertainty, energy consumption and economic growth on pollution in G7 countries are investigated by using methods of moments quantile regression over the perod of 1995-2018. According to the long run coefficient estimation results, in the model in which the fossil fuel energy consumption variable is used as an energy consumption indicator, economic policy uncertainty has a reducing effect on emissions at all quantile levels. Although this negative effect becomes more pronounced as the quantile level increases, it is statistically insignificant at the 0.90 quantile level. In the model that includes fossil fuel energy consumption, the coefficient of economic policy uncertainty variable is negative in all quantiles and is significant only at the 0.30 and 0.40 quantile levels. In addition, while a U-shaped relationship is detected between economic growth and emissions in these countries, the destroying effect of fossil fuel energy on environmental quality is confirmed in all quantiles. Thus, it should be a priority to support the developments in growth performance with environmental regulations, encourage energy -saving and energy -efficient practices as well as to establish the legal infrastructure.
How Does Nuclear Energy Affect Environmental Pollution? Evidence From the United States
(Syarif Syarif Hidayatullah State Univ Jakarta, 2024) Atay Polat, Melike; Savranlar, Buket; Arslan, Ferhan
Research Originality: Nuclear power plant installation activities, which have gained momentum since the 1970s, have made nuclear energy widespread. The US ranks first in the world in nuclear energy use. This article contributes to the existing literature on environmental economics by incorporating environmental technologies and globalization into investigating the impact of nuclear energy on environmental pollution. Research Objectives: This study aims to analyze the effects of nuclear energy consumption, environmental technologies, and globalization on environmental pollution in the US.. Research Methods: The paper use ARDL approach with the data of 1970-2018 period. Empirical Results: According to the findings, nuclear energy consumption negatively affects environmental quality in the US both in the short and long run. On the contrary, environment- related technologies contribute positively to environmental quality, reducing carbon footprint in the long run. Also, globalization has an insignificant effect on the environment in both the short and long run. Implications: Supporting environmental technologies and exchanging nuclear energy with renewable energy sources in the US is thought to improve environmental quality.
The impact of technological innovations on the environmental Kuznets curve: evidence from EU-27
(Springer, 2024) Atay Polat, Melike; Savranlar, Buket; Atay Polat, Melike; Yiğit, Yüksel; Aslan, Alper
The EKC hypothesis expresses the inverted U-shaped relationship between per capita income and environmental quality. In the literature, the role of technological innovations and income inequality on pollution is a relatively recent discussion in the studies testing the EKC hypothesis. The aim of this paper is to investigate the impact of technological innovations, income inequality, exports, urbanization, and growth on CO2 emissions in EU-27. In addition, while investigating this relationship, exports and urbanization are also considered and panel vector autoregression (PVAR) analysis is applied for the 2005-2019 period. According to the coefficient estimation results, while income inequality, exports, and urbanization increase pollution, technological innovations contribute to environmental quality. Also, the results demonstrated that the EKC hypothesis is invalid in these countries and there is a U-shaped relationship between growth and emissions. The causality test results revealed the presence of unidirectional causality running from all explanatory variables to CO2 emissions. Moreover, impulse-response graphs demonstrated that the reply of emissions to the shocks in the explanatory variables is similar to the long-run coefficient results. In conclusion, all available empirical evidence for this relationship highlights that income inequality and technological innovations should be considered in policy-making processes to ensure environmental quality in EU-27 countries.
What are the mistakes we think are correct about the Natural resource curse' hypothesis? New insights from quantile regressions via method of moments for EU
(Elsevier, 2023) Atay Polat, Melike; Atay Polat, Melike; Aslan, Alper
The nexus among natural resources and economic growth has recently been extensively studied in the context of the "Natural Resource Curse (NRC)" hypothesis. It is critical to use the latest analysis techniques in the development of the relevant literature. Therefore, this study aims to test the NRC hypothesis in EU member countries applying the Method of Moments Quantile Regression. Moreover, the focus of this study on EU countries for the first time fills an important gap in the literature. Renewable energy consumption, gross fixed capital formation, and urbanization are adopted as control variables. The findings demonstrate the validity of the NRC hypothesis at all quantile levels. Renewable energy consumption contributes to economic growth up to 0.70 quantile level. Additionally, gross fixed capital formation and urbanization have a positive impact on growth at all quantile levels. Empirical outputs highlight the importance of natural resources for growth in EU member countries and raise suggestions for possible policy formulation and implementation processes.