Yazar "Konat, Gokhan" seçeneğine göre listele

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    Öğe
    An Empirical Investigation of Explosive Price Behavior in US State-Level Electricity Markets Across Consumer Segments
    (Mdpi, 2025) Mert Saritas, Merve; Konat, Gokhan; Dalyanci, Levent; Yilanci, Veli
    This study investigates speculative bubbles in U.S. state-level electricity markets across commercial, industrial, and residential segments. Using monthly data (2005-2025) from the U.S. Energy Information Administration and employing the Generalized Supremum Augmented Dickey-Fuller test, evidence of localized explosive price behavior was observed predominantly in Florida, Hawaii, Pennsylvania, and Oregon, among others. These bubbles, often tied to market disruptions such as fuel price volatility and post-pandemic recovery, were mainly short-lived and region-specific. The findings highlight the need for tailored, state-specific regulatory strategies to address unique market dynamics, ensuring stability amidst the ongoing energy transition.
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    Öğe
    Analyzing Türkiye's ecological footprint: the impact of air transportation, renewable energy, and R&D using a non-linear ARDL approach
    (Iop Publishing Ltd, 2025) Konat, Gokhan; Yilanci, Veli; Tatar, Havanur Ergun; Han, Aysegul
    This study investigates the complex relationship between air transportation, research and development (R&D) expenditures, renewable energy consumption, economic growth, and the ecological footprint in T & uuml;rkiye, utilizing annual data from 1990 to 2021. Employing both linear and non-linear Autoregressive Distributed Lag (ARDL) models, the study assesses the validity of the Environmental Kuznets Curve (EKC) hypothesis and explores the short- and long-run dynamics of the ecological footprint. Both the linear and non-linear ARDL models provide support for the EKC hypothesis, suggesting that economic growth may decouple from environmental degradation in the long run. Furthermore, robustness checks corroborate these findings. In the long term, air transportation exhibits asymmetric effects; while its positive components do not have a direct impact, its negative components contribute to environmental degradation in T & uuml;rkiye. Renewable energy consumption mitigates environmental pressure, whereas the impact of R&D expenditures is not statistically significant. The findings underscore the substantial influence of air transportation on T & uuml;rkiye's ecological footprint, highlighting the necessity for sustained efforts toward sustainable practices and technological advancements within the aviation sector. Moreover, the study emphasizes the importance of investments in R&D and renewable energy for achieving environmental sustainability, while also acknowledging their complex and multifaceted impacts. The paper also discusses policy recommendations and future research directions focused on achieving a balance between economic development and environmental protection in T & uuml;rkiye.