İktisat Bölümü Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12514/95

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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) Aslan, Alper; 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.
Impact of fossil fuels and renewable energy consumption on economic growth in Paris Club Countries
(AIP Publishing, 2022) Öztürk, İlhan; Öztürk, İlhan; Aslan, Alper; Özsolak, Baki; Atay Polat, Melike; Turan, Zubeyir
The relationship between economic growth (in terms of GDP) and renewable energy (RE) and nonrenewable energy (NRE) consumption was investigated in 20 countries featured on the Renewable Energy Country Attractiveness Index list, also known as the Paris Club. The effect of both RE and NRE consumption on economic growth is discussed in the growth model based on the neoclassical production function. Labor and capital, which are important dynamics of growth, are also considered in the model. Granger causality and panel vector autoregression analysis are performed for the period 1991–2016. The results show that neither RE nor NRE consumption has a positive effect on economic growth. In reality, a 1% increase in RE consumption will reduce the GDP growth by 0.14%. For the effect of GDP growth on energy types, if growth increases by 1%, NRE consumption increases by 5.54%. If economic growth increases by 1%, a reduction of 1.73% occurs in RE consumption. In contrast, a causal link between both types of energy to growth has not been determined. There is no statistically significant coefficient of NRE and capital factors on GDP. A mutually positive and statistically significant relationship was determined between labor and growth. According to the results of variance decomposition, the basic dynamic of growth is itself: over a ten-year period, growth was affected by itself by 98%.
The impact of technological innovations on the environmental Kuznets curve: evidence from EU-27
(Springer, 2024) Ercan, Hamdi; 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.
Is electronic finance sustainable or not in the European Union? New insights from the panel vector autoregression approach
(SpringerLink, 2022) Altınöz, Buket; Aslan, Alper; Atay Polat, Melike; Topalgokcelli, Emre; Esmeray, Murat
Abstract Today, as a result of the developments and widespread use of information and communication technologies, the weight of online shopping in the economy has increased. The environmental impacts of this new order, which is an important part of electronic fnance, are discussed. In this study, the efect of electronic fnance, economic growth, renewable energy consumption, and urbanization on emissions in EU member countries is examined using the panel vector autoregression (PVAR) approach for the period from 2005 to 2018. The main results suggest that e-fnance has a positive and statistically signifcant efect on CO2 emissions. However, the renewable energy consumption-increasing efect of e-fnance is greater than its emission-reducing efect. Moreover, renewable energy consumption has a statistically insignifcant efect on emissions. Therefore, the contribution of e-fnance on environmental quality weakens. The requirement for EU member countries to prioritize the use of environmentally friendly energy to beneft from the environmental contribution of e-fnance in the most optimal way is stated as the main policy implication of this study
The nexus among climate change, economic growth, foreign direct investments, and financial development: New evidence from N-11 countries
(Environmental Progress and Sustainable Energy, 2021) Atay Polat, Melike; Aslan, Alper; Altınöz, Buket
The aim of this article is to investigate the relationship between air pollution, economic growth, energy use, trade openness, foreign direct investment, and financial development in N-11 countries data period from 1980 to 2018. For this purpose, it is adopted the Panel Vector Autoregression (PVAR) model for the estimation of the long and short-run effects. The results suggest that although energy consumption and financial development have a negative impact on CO2 emissions, foreign direct investment leads to an increase in pollution. In addition, there is bidirectional causality between financial development and CO2 emissions and energy use, carbon dioxide emissions and energy consumption, foreign direct investments and energy consumption, and financial development and energy consumption. In addition, there is unidirectional causality from carbon dioxide emissions to GDP, from energy consumption to GDP, from foreign direct investments to CO2 emissions and GDP, from financial development to GDP. Finally, impulse-response functions indicate the validity of the EKC hypothesis in these 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) Savranlar, Buket; 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.

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Browsing İktisat Bölümü Koleksiyonu by Author "Aslan, Alper"