Ece Akdoğan - Academia.edu (original) (raw)

Papers by Ece Akdoğan

Sustainability, May 7, 2024

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Sustainability, Feb 28, 2019

There exists a highly interrelated relationship between energy, the environment and growth where ... more There exists a highly interrelated relationship between energy, the environment and growth where the efficient management of this nexus is not only a must for sustainable development and human wellbeing but is also a basis for formulating sound economic policies harnessed with energy and environmental policies. Thus, this paper aims at investigating the causal relationships among renewable energy production, total energy consumption and economic growth for Turkey both in the long and short runs. The analyses are conducted by using the Johansen-Juselius co-integration test, the vector error correction model, Granger causality, impulse-response functions and variance decomposition for the period 1980-2016. Our findings obtained for the causal relationship between renewable energy and economic growth points to a bidirectional relationship both in the short and in long runs that promote feedback hypothesis, and it also reports a causal relationship running from energy consumption to economic growth both in the short and long runs, supporting the growth hypothesis. However, no consistent result could be obtained for the short run relationship from economic growth to energy consumption. These results indicate that increased renewable energy production and decreased energy consumption are vital for Turkey's sustainable development.

European Scientific Journal, ESJ, Aug 16, 2017

This paper aims to understand the impact of US nonfarm payroll announcements on emerging stock ma... more This paper aims to understand the impact of US nonfarm payroll announcements on emerging stock markets through concentrating on the Turkish Stock Exchange: BIST 100. We not only investigate the impact of each of the three components of the nonfarm payroll data for the whole period under consideration, but also look for possible differences among four sub-periods. A comparative analysis leads us to conclude that it is not the nonfarm payroll which significantly affect BIST 100, but the fact that it is regarded as an important indicator to foresee Fed's policy actions that can alter the capital flows.

Academy of Accounting and Financial Studies Journal, 2019

This paper investigates the predictability of CDS premiums and thus addresses weak form informati... more This paper investigates the predictability of CDS premiums and thus addresses weak form informational efficiency of CDS markets through examining the statistical properties of Latvian CDS spreads in-between 01:2006-08:2017 by concentrating on stationarity issues. The findings for the Augmented Dickey Fuller test fail to reject the presence of unit root indicating that the CDS market is weak form efficient while nonlinear tests of Kapatenios, Snell and Shin, and Sollis claim the opposite, demonstrating a smooth transition in general, and asymmetric smooth transition in particular. Additionally, the results of Perron and Zivot-Andrews tests identify no structural break as well for robustness. These results underline the necessity of accounting for nonlinearities in CDS premiums to grasp the predictability dynamics better.

Actual Problems of Economics, 2013

In this study, a bi-variate Generalized Autoregressive Conditional Heteroscedasticty model is use... more In this study, a bi-variate Generalized Autoregressive Conditional Heteroscedasticty model is used in order to investigate the Granger causality relationships between output growth, inflation rate and their uncertainties. Our test results show that the existence of Grangercausality is observed from nominal uncertainty to inflation, from nominal uncertainty to real uncertainty, from output growth to real uncertainty, from output growth to nominal uncertainty and from inflation to nominal uncertainty. These findings prove that theoretical predictions of Cuikerman and Meltzer (1986), Okun (1971) and Friedman (1977) are valid for the period 1986:6-2007:1 for Turkey. On the other hand, 'Short-run Phillips Curve' and 'Taylor Effect' have proven empirically to be invalid for Turkey for this sample period. Moreover, we deduce that Turkish inflation is affected by the output growth through the nominal uncertainty channel.

In this paper, we address weak form stock market efficiency of Emerging Economies, by testing whe... more In this paper, we address weak form stock market efficiency of Emerging Economies, by testing whether the price series of these markets contain unit root. Nonlinear behavior of stock prices is well documented in the literature, and thus linear unit root tests may not be appropriate in this case. For this purpose, we employ the nonlinear unit root test procedure recently developed by Kapetanios et al. (2003) and nonlinear panel unit root test Ucar and Omay (2009) that has a better power than standard unit root tests when series under consideration are characterized by a slower speed of mean reversion. Large power gains are achieved through combining crosssectional information and nonlinear estimation techniques in computing unit root tests. The results of ADF and PP indicate that Bulgarian, Greek, Hungarian, Polish, Romanian, Russian, Slovenian and Turkish stock markets are weak form efficient, while the results of nonlinear unit root test implies that Russian, Romanian and Polish stock markets are not weak form efficient. Moreover, the linear panel unit root test suggest that this group as all efficient where as nonlinear panel unit root test suggest as a group they are not efficient.

Although there exists a wide array of literature regarding almost every aspect of globalization a... more Although there exists a wide array of literature regarding almost every aspect of globalization at macro level, surprisingly, the micro level of the subject area seems to be a little ignored and consequently, almost nothing is known about the impact of globalization on firm performance/value. In an attempt to contribute to fulfilling this gap, this research focuses on the impact of the overall globalization level of a country and its single dimensions, specifically her economic, her political and her social globalization levels on firm performance which is measured by the stock market index returns for "Emerging-7 (E7)" countries, specifically Brazil, China, India, Indonesia, Mexico, Russia and Turkey, for the period 1998-2009 by using panel data estimation. The findings suggest that the overall level of globalization significantly improves firm performance. Besides, the single dimensions of globalization are also found to have value enhancing effects though the result for...

Zbornik radova Ekonomskog fakulteta u Rijeci: časopis za ekonomsku teoriju i praksu/Proceedings of Rijeka Faculty of Economics: Journal of Economics and Business, 2019

The massive financial liberalization followed by accelerating financial globalization leaded to s... more The massive financial liberalization followed by accelerating financial globalization leaded to significant structural changes in the financial sector. Since financial institutions play a dominant role in functioning of financial sector, especially in emerging markets where banking industries are generally among the most sensitive sectors to increased interconnectedness of financial markets, how financial globalization actually affects the efficiency of financial intermediation is a vital question. However, although there exists plenty of research focusing on financial integration, impacts of financial globalization is untouched. Hence, this study investigates the bank profitability effects of financial globalization through focusing on an emerging market, Turkey and searches for any potential differences that may prevail among banks with different ownership structures. The findings indicate that while the market based profitability measures improve with financial globalization, the accounting based measures deteriorate pinpointing to an over optimism in the market which in turn brings in mispricing problems. Besides, ownership structure is found to affect the market based measures where banks with domestic and private ownerships are found to benefit more. However, since no significant distinction could be detected among any of the ownership compositions for accounting based profitability measures, such misappraisals seem to foster the optimism in the market.

International Food and Agribusiness Management Review, 2019

The efficiency of working capital is a major determinant of firm profitability. So, the grasp of ... more The efficiency of working capital is a major determinant of firm profitability. So, the grasp of working capital dynamics is extremely important for managers, but also for policy makers, since inefficient working capital management is an important source of industrial sickness. This study focuses on the profitability impacts of working capital policies of Turkish agribusinesses, and aims to investigate the potential effects of globalization on these interrelated relationships. The findings obtained from pooled panel analyses demonstrate that Turkish agribusinesses can enhance their profitability and value by adopting a conservative working capital policy through lengthening the cash conversion cycle up to an optimal level. Besides, globalization is found to deteriorate their efficiency and profitability where economic globalization seems to have the highest impact raising questions on the effectiveness of Turkish agribusinesses in coping with competition. Thus, both the managers and...

Economics and Business Letters, 2018

This paper examines the impact of globalization on the operational efficiencies of emerging marke... more This paper examines the impact of globalization on the operational efficiencies of emerging market firms by concentrating on the financial outcomes of a firm’s main operations through focusing on operating income and cash conversion cycle as well as on their possible causes in an emerging market, Turkey. The findings indicate that globalization significantly deteriorates the operating income and lengthens the cash conversion cycle of Turkish firms and their components. However, although no difference could be reported on the direction of these effects, the adverse impact of globalization on operating income and its components are observed to be weaker while the lengthening impact on cash conversion cycle and its components are observed to be stronger for SMEs.

Sustainability, 2019

There exists a highly interrelated relationship between energy, the environment and growth where ... more There exists a highly interrelated relationship between energy, the environment and growth where the efficient management of this nexus is not only a must for sustainable development and human wellbeing but is also a basis for formulating sound economic policies harnessed with energy and environmental policies. Thus, this paper aims at investigating the causal relationships among renewable energy production, total energy consumption and economic growth for Turkey both in the long and short runs. The analyses are conducted by using the Johansen–Juselius co-integration test, the vector error correction model, Granger causality, impulse-response functions and variance decomposition for the period 1980–2016. Our findings obtained for the causal relationship between renewable energy and economic growth points to a bidirectional relationship both in the short and in long runs that promote feedback hypothesis, and it also reports a causal relationship running from energy consumption to eco...

Sustainability, May 7, 2024

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Sustainability, Feb 28, 2019

There exists a highly interrelated relationship between energy, the environment and growth where ... more There exists a highly interrelated relationship between energy, the environment and growth where the efficient management of this nexus is not only a must for sustainable development and human wellbeing but is also a basis for formulating sound economic policies harnessed with energy and environmental policies. Thus, this paper aims at investigating the causal relationships among renewable energy production, total energy consumption and economic growth for Turkey both in the long and short runs. The analyses are conducted by using the Johansen-Juselius co-integration test, the vector error correction model, Granger causality, impulse-response functions and variance decomposition for the period 1980-2016. Our findings obtained for the causal relationship between renewable energy and economic growth points to a bidirectional relationship both in the short and in long runs that promote feedback hypothesis, and it also reports a causal relationship running from energy consumption to economic growth both in the short and long runs, supporting the growth hypothesis. However, no consistent result could be obtained for the short run relationship from economic growth to energy consumption. These results indicate that increased renewable energy production and decreased energy consumption are vital for Turkey's sustainable development.

European Scientific Journal, ESJ, Aug 16, 2017

This paper aims to understand the impact of US nonfarm payroll announcements on emerging stock ma... more This paper aims to understand the impact of US nonfarm payroll announcements on emerging stock markets through concentrating on the Turkish Stock Exchange: BIST 100. We not only investigate the impact of each of the three components of the nonfarm payroll data for the whole period under consideration, but also look for possible differences among four sub-periods. A comparative analysis leads us to conclude that it is not the nonfarm payroll which significantly affect BIST 100, but the fact that it is regarded as an important indicator to foresee Fed's policy actions that can alter the capital flows.

Academy of Accounting and Financial Studies Journal, 2019

This paper investigates the predictability of CDS premiums and thus addresses weak form informati... more This paper investigates the predictability of CDS premiums and thus addresses weak form informational efficiency of CDS markets through examining the statistical properties of Latvian CDS spreads in-between 01:2006-08:2017 by concentrating on stationarity issues. The findings for the Augmented Dickey Fuller test fail to reject the presence of unit root indicating that the CDS market is weak form efficient while nonlinear tests of Kapatenios, Snell and Shin, and Sollis claim the opposite, demonstrating a smooth transition in general, and asymmetric smooth transition in particular. Additionally, the results of Perron and Zivot-Andrews tests identify no structural break as well for robustness. These results underline the necessity of accounting for nonlinearities in CDS premiums to grasp the predictability dynamics better.

Actual Problems of Economics, 2013

In this study, a bi-variate Generalized Autoregressive Conditional Heteroscedasticty model is use... more In this study, a bi-variate Generalized Autoregressive Conditional Heteroscedasticty model is used in order to investigate the Granger causality relationships between output growth, inflation rate and their uncertainties. Our test results show that the existence of Grangercausality is observed from nominal uncertainty to inflation, from nominal uncertainty to real uncertainty, from output growth to real uncertainty, from output growth to nominal uncertainty and from inflation to nominal uncertainty. These findings prove that theoretical predictions of Cuikerman and Meltzer (1986), Okun (1971) and Friedman (1977) are valid for the period 1986:6-2007:1 for Turkey. On the other hand, 'Short-run Phillips Curve' and 'Taylor Effect' have proven empirically to be invalid for Turkey for this sample period. Moreover, we deduce that Turkish inflation is affected by the output growth through the nominal uncertainty channel.

In this paper, we address weak form stock market efficiency of Emerging Economies, by testing whe... more In this paper, we address weak form stock market efficiency of Emerging Economies, by testing whether the price series of these markets contain unit root. Nonlinear behavior of stock prices is well documented in the literature, and thus linear unit root tests may not be appropriate in this case. For this purpose, we employ the nonlinear unit root test procedure recently developed by Kapetanios et al. (2003) and nonlinear panel unit root test Ucar and Omay (2009) that has a better power than standard unit root tests when series under consideration are characterized by a slower speed of mean reversion. Large power gains are achieved through combining crosssectional information and nonlinear estimation techniques in computing unit root tests. The results of ADF and PP indicate that Bulgarian, Greek, Hungarian, Polish, Romanian, Russian, Slovenian and Turkish stock markets are weak form efficient, while the results of nonlinear unit root test implies that Russian, Romanian and Polish stock markets are not weak form efficient. Moreover, the linear panel unit root test suggest that this group as all efficient where as nonlinear panel unit root test suggest as a group they are not efficient.

Although there exists a wide array of literature regarding almost every aspect of globalization a... more Although there exists a wide array of literature regarding almost every aspect of globalization at macro level, surprisingly, the micro level of the subject area seems to be a little ignored and consequently, almost nothing is known about the impact of globalization on firm performance/value. In an attempt to contribute to fulfilling this gap, this research focuses on the impact of the overall globalization level of a country and its single dimensions, specifically her economic, her political and her social globalization levels on firm performance which is measured by the stock market index returns for "Emerging-7 (E7)" countries, specifically Brazil, China, India, Indonesia, Mexico, Russia and Turkey, for the period 1998-2009 by using panel data estimation. The findings suggest that the overall level of globalization significantly improves firm performance. Besides, the single dimensions of globalization are also found to have value enhancing effects though the result for...

Zbornik radova Ekonomskog fakulteta u Rijeci: časopis za ekonomsku teoriju i praksu/Proceedings of Rijeka Faculty of Economics: Journal of Economics and Business, 2019

The massive financial liberalization followed by accelerating financial globalization leaded to s... more The massive financial liberalization followed by accelerating financial globalization leaded to significant structural changes in the financial sector. Since financial institutions play a dominant role in functioning of financial sector, especially in emerging markets where banking industries are generally among the most sensitive sectors to increased interconnectedness of financial markets, how financial globalization actually affects the efficiency of financial intermediation is a vital question. However, although there exists plenty of research focusing on financial integration, impacts of financial globalization is untouched. Hence, this study investigates the bank profitability effects of financial globalization through focusing on an emerging market, Turkey and searches for any potential differences that may prevail among banks with different ownership structures. The findings indicate that while the market based profitability measures improve with financial globalization, the accounting based measures deteriorate pinpointing to an over optimism in the market which in turn brings in mispricing problems. Besides, ownership structure is found to affect the market based measures where banks with domestic and private ownerships are found to benefit more. However, since no significant distinction could be detected among any of the ownership compositions for accounting based profitability measures, such misappraisals seem to foster the optimism in the market.

International Food and Agribusiness Management Review, 2019

The efficiency of working capital is a major determinant of firm profitability. So, the grasp of ... more The efficiency of working capital is a major determinant of firm profitability. So, the grasp of working capital dynamics is extremely important for managers, but also for policy makers, since inefficient working capital management is an important source of industrial sickness. This study focuses on the profitability impacts of working capital policies of Turkish agribusinesses, and aims to investigate the potential effects of globalization on these interrelated relationships. The findings obtained from pooled panel analyses demonstrate that Turkish agribusinesses can enhance their profitability and value by adopting a conservative working capital policy through lengthening the cash conversion cycle up to an optimal level. Besides, globalization is found to deteriorate their efficiency and profitability where economic globalization seems to have the highest impact raising questions on the effectiveness of Turkish agribusinesses in coping with competition. Thus, both the managers and...

Economics and Business Letters, 2018

This paper examines the impact of globalization on the operational efficiencies of emerging marke... more This paper examines the impact of globalization on the operational efficiencies of emerging market firms by concentrating on the financial outcomes of a firm’s main operations through focusing on operating income and cash conversion cycle as well as on their possible causes in an emerging market, Turkey. The findings indicate that globalization significantly deteriorates the operating income and lengthens the cash conversion cycle of Turkish firms and their components. However, although no difference could be reported on the direction of these effects, the adverse impact of globalization on operating income and its components are observed to be weaker while the lengthening impact on cash conversion cycle and its components are observed to be stronger for SMEs.

Sustainability, 2019

There exists a highly interrelated relationship between energy, the environment and growth where ... more There exists a highly interrelated relationship between energy, the environment and growth where the efficient management of this nexus is not only a must for sustainable development and human wellbeing but is also a basis for formulating sound economic policies harnessed with energy and environmental policies. Thus, this paper aims at investigating the causal relationships among renewable energy production, total energy consumption and economic growth for Turkey both in the long and short runs. The analyses are conducted by using the Johansen–Juselius co-integration test, the vector error correction model, Granger causality, impulse-response functions and variance decomposition for the period 1980–2016. Our findings obtained for the causal relationship between renewable energy and economic growth points to a bidirectional relationship both in the short and in long runs that promote feedback hypothesis, and it also reports a causal relationship running from energy consumption to eco...