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Yayın Estimation of Bitcoin volatility: GARCH implementation(Seventh Sense Research Group, 2020-01) Teker, Dilek; Teker, SuatAs bitcoin has been a topic of high interest for academic and professional life over recent years, a number of literature has examined its price movements, volatility, and predictions. Bitcoin is the first and perhaps the most popular cryptocurrency with a high volatility pattern compared to the other cryptocurrencies. This paper examines the models that explain the volatility of Bitcoin prices. The daily data for the Bitcoin prices are used through a period of July 31, 2017, to April 3, 2019, with a total number of observations of 484. Initially, unit root tests are implemented. Then, the heteroskedasticity problem is tested among variables. Based on the results of the heteroskedasticity test, it is decided to use ARCH models. Then, ARCH, GARCH, TGARCH, and EGARCH results are tested to find out the best fit model that explains the bitcoin price movements.Yayın 5G technology and future of banking(The Brooklyn Research and Publishing Institute, 2021-12) Teker, Suat; Teker, Dilek; Orman, IrmakThis study examines the effects ofdevelopments in communication technologies on the banking sector and banking services. In addition, it is envisioned how 5G technology will shape the future of the banking industry. As a result of the analysis, it has been observed that an important innovation and structural transformation period was lived in the banking sector with the use of 3G and before 2000, which we define as traditional banking era. It is concluded that with the expected wide use of 5G technology after year 2022, the banking sector is expected to enter a new and disruptive restructuring and service innovation.
