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Yayın Bitcoin as a global risk and the woes of the Turkish Lira(Routledge Taylor & Francis Group, 2022) Napari, Ayuba; Parlaktuna, İnciOwing to the high penetration of cryptocurrencies in the Turkish Economy, we sought to determine whether cryptocurrencies as represented by Bitcoin has become a global risk for the Turkish Lira. To accomplish this, we model the Turkish Lira exchange rate returns volatility using threshold GARCH-M with Bitcoin as an exogenous covariate. Bitcoin was found to be a contributor to Turkish forex volatility up until January 2018 when the ‘ongoing’ currency crisis started. Bitcoin, however, lost its volatility contributory power from January 2018. This result is robust to the inclusion of CBOE-VIX, iShares MSCI Turkey EFT, and the dollar-lira interest rate differential as control variables.Yayın Choosing solitude in turmoil, herding in the decentralized finance (DeFi) token market: An international perspective(Korea Distribution Science Assoc, 2022) Khan, Asad ul Islam; Özcan, Rasim; Turgut, Murat; Napari, Ayuba; Yönetim Bilimleri Fakültesi, İktisat BölümüFinancial markets have long been known to be prone to behavioral biases. One such behavioural bias that is consequential yet pervasive in financial markets is the herd effect. The objective of this study is to determine whether or not there exist herd behaviour in the new and bourgeoning Decentralized Finance (DeFi) Tokens market. This is accomplished by using daily returns of 22 DeFi tokens from January 29, 2017 to August 19, 2021, and the Cross-sectional Absolute Deviation (CSAD) of market returns to capture herd behavior. The results fail to provide any evidence of herding in the DeFi token market on bullish days, that is days for which the average market returns is positive. For bearish days however, that is days for which the market returns is negative, our empirical findings point to the presence of adverse herding in the DeFi token market. This phenomenon can be explained to some extent by the investor composition of the DeFi market. The DeFi token space is a growth market dominated by experts and/or enthusiasts who are insulated against the temptation and panic of negative market swings by the level of market and technical information they possess on the assets they invest.Yayın Monetary policy and nonperforming loan ratios in a monetary union; a counterfactual study(Emerald Publishing, 2023) Özcan, Rasim; Khan, Asad ul Islam; Napari, Ayuba; Yönetim Bilimleri Fakültesi, İktisat BölümüPurpose – For close to two decades, the West African Monetary Zone (WAMZ) has been preparing to launch a second monetary union within the ECOWAS region. This study aims to determine the impact such a unionised monetary regime will have on financial stability as represented by the nonperforming loan ratios of Ghana in a counterfactual framework. Design/methodology/approach – This study models nonperforming loan ratios as dependent on the monetary policy rate and the business cycle. The study then used historical data to estimate the parameters of the nonperforming loan ratio response function using an Autoregressive Distributed Lag (ARDL) approach. The estimated parameters are further used to estimate the impact of several counterfactual unionised monetary policy rates on the nonperforming loan ratios and its volatility of Ghana. As robustness check, the Least Absolute Shrinkage Selection Operator (LASSO) regression is also used to estimate the nonperforming loan ratios response function and to predict nonperforming loans under the counterfactual unionised monetary policy rates. Findings – The results of the counterfactual study reveals that the apparent cost of monetary unification is much less than supposed with a monetary union likely to dampen volatility in non-performing loans in Ghana. As such, the WAMZ members should increase the pace towards monetary unification. Originality/value – The paper contributes to the existing literature by explicitly modelling nonperforming loan ratios as dependent on monetary policy and the business cycle. The study also settles the debate on the financial stability cost of a monetary union due to the nonalignment of business cycles and economic structures.Yayın Monetary unions and crypto-currency competition: Implications for financial stability(İbn Haldun Üniversitesi, Lisansüstü Eğitim Enstitüsü, 2024) Napari, Ayuba; Khan, Asad ul IslamThis thesis contains three full article chapters. Chapter one is a general introduction of the thesis explicitly stating the research gap, purpose and objectives of the essays and their significance. Chapter two develops a model of nonperforming loans that is dependent on the lending gap and the output gap. Using nonperforming loan ratios as a measure of financial soundness, the model is used to examine the financial stability implication of a monetary union on member countries. This is tested in a counterfactual framework using Ghana, a member of the yet to be implemented West African Monetary Zone. Chapter three reviews the literature on Hayek's Denationalisation of Money proposal prior to and after the proliferation of cryptocurrencies. It also evaluates the extent to which cryptocurrencies align with Hayek's proposal in the denationalisation of money. It is concluded that, opinions on Hayek's proposal subtly changed for critical to cautious acclaim. Also, it is concluded that custodial stablecoins best reflects Hayek's proposal and are the crypto asset most likely to survive government legibility regulations. In chapter four, the impact crypto-currency substitution, proxied by cryptocurrency returns, on exchange rate volatility is examined empirically for the case of Nigeria. Cryptocurrency returns is found to have a positive impact on volatility of the Naira.Yayın Stablecoins and emerging market currencies: A time-varying analysis(Emerald Publishing, 2025) Napari, Ayuba; Khan, Asad ul Islam; Kaplan, Muhittin; Vergil, Hasan; Yönetim Bilimleri Fakültesi, İktisat BölümüPurpose: Owing to the growing evidence of crypto asset connectedness and correlation with traditional financial assets, this study sought to determine if there is a time-varying correlation and/or connectedness between the stablecoin market and the currencies of emerging market and developing economies (EMDEs) with significant cryptocurrency penetration. Design/methodology/approach: This study uses a probabilistic principal component analysis (PPCA) to create stablecoin and EMDEs currency returns and volatility indices for EMDEs with significant cryptocurrency penetration. We then employ a time-varying correlation and time-varying parameter vector autoregressive (TVP-VAR) connectedness measures to document the time-dependent correlation and connectedness between the EMDE currencies and the stablecoin market. Findings: The result points to a spillover of return shocks from the EMDE currencies to the stablecoin market prior to and after the COVID-19 pandemic. This is indicative of a flight-to-safety role of stablecoins for EMDE currencies. This calls for increased attention to the stablecoin market by money market investors and monetary authorities. Originality/value: The paper contributes to the growing cryptocurrency and finance literature by empirically examining the level of connectedness between stablecoins and emerging market currencies. Knowing the relationship (correlation) and shock spillover (connectedness) between the stablecoins and the EMDE currencies will be valuable to currency investors’ diversification and hedging strategies, and to macroeconomic policymakers in designing and implementing regulation.Yayın Subsample stability, change detection and dynamics of oil and metal markets: A recursive approach(Elsevier, 2023) Khan, Asad ul Islam; Shahbaz, Muhammad; Napari, Ayuba; Yönetim Bilimleri Fakültesi, İktisat BölümüThe analysis of historical price data for patterns and using such patterns for predictions and policy recommendations has become ubiquitous in the existing economics literature. These predictions and recommendations are premised on the stability of the statistical properties and inter-variable dynamics for which a single regime or few number of regimes can capture. This, however, is a strong assumption with serious repercussions if violated. In this study, the appropriateness of the stability assumption is questioned using various recursive regressions to test stability, consistency of stationarity and stability in inter-variable dynamics between crude oil, gold, silver, and platinum prices. Using monthly data sourced from the World Bank Commodity Price Data (Pink Sheet) from January 1, 9960 to March 2022, our empirical analysis found level prices of oil, gold, and platinum to be consistently non-stationary with rare exceptions. The level price of silver however is found to be inconsistent with multiple regime switches while the logged series of all variables yielded non-stationarity. The default is stationarity for all the variables when price series are logged differenced and/or differenced for oil, silver, and platinum. Differenced gold prices resulted in inconsistent stationarity with multiple regime changes. Even if rare, the stationarity of all the variables is dependent on time and sample size due to the inconsistence in the stationarity verdict. On the bi-variate relationship in the long run, only level silver prices are found to be cointegrated with oil while logged silver prices are inconsistently cointegrated with logged oil prices. Also, in the short-run, only log of oil prices is found to Granger cause log of silver prices. It is thus recommended that researchers and policy makers be tempered in extrapolating statistical findings in general and the price and interprice dynamics of oil, gold, silver and platinum into the future.Yayın The language of sustainability: Exploring the implications of metaphors on environmental action and finance(Corvinus University of Budapest, 2023) Napari, Ayuba; Özcan, Rasim; Khan, Asad ul Islam; Özcan, Rasim; Yönetim Bilimleri Fakültesi, İktisat BölümüThe relationship between humans and the environment is complex. To capture this complex relationship, metaphors/concepts have always been used. The most prominent of these metaphors/conceptions is the limits concept. This views the natural environment in terms of its carrying capacity and contend that human actions must be controlled so as not to overwhelm the environment. For overburdening the environment will result in a collapse of the natural system. The environmental optimists on the other hand discount the carrying capacity contending that human ingenuity and the market mechanism will overcome any temporary environmental problems that may arise. A tempered version of both is the political-ecological class of metaphors/conceptions which emphasize the political, cultural, and economic factors responsible for environmental decay and/or restoration. In this study, the implications of these metaphors/conceptions on environmental action and environmental finance are examined. It is concluded that, the limits conception views environmental action as a top-bottom endeavor and places governmental and multilateral organizations at the center of environmental and climate finance. The neoclassical and technological optimist concepts contend that, the current capitalist structure is well suited to tackle environmental externalities and government policy should encourage eco-innovation preferable through public-private partnerships. The tapestry and the political-ecological class of metaphors envisages a role for central authorities as well as private local individuals with crowdfunding and corporate social/environmental responsibilities along with governmental and multilateral aid and public-private partnerships being some of the main sources of funds for environmental protection and restoration.Yayın Using cognitive apprenticeship to enhance the study of budgeting and budgetary control: An action research(Necmettin Erbakan Üniversitesi, 2020) Napari, AyubaThis research project sought to assist business three (3) students of Faith Senior High School to enhance their performance in budgeting and budgetary control using cognitive apprenticeship model of instruction. Many have argued that, our educational curriculum should be modelled to equip students with the requisite employable and entrepreneurial skills. Some scholars argue that the best form of education that give hands on practical training is the apprenticeship model of education and think it can be incorporated into our educational system. This can be done by replicating/bringing the process in the traditional apprenticeship that is the modeling, scaffolding, coaching, articulation and exploration into the classroom. The research was conducted in a way that saw the replication of all the elements of the apprenticeship model in the classroom for the impact to be evaluated. All the students in the class took part in the study. The researcher used exercises, observations, interview and administered questionnaire to gather data and used tables and figures/charts to analyze the data. The post-intervention results showed that the performance of the students improved consistently over the study period. The results mean that students’ performance can be enhanced if the cognitive apprenticeship model of instruction is used.
