Yazar "Kazak, Hasan" seçeneğine göre listele

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    Connections between gold, main agricultural commodities, and Turkish stock markets
    (Borsa Istanbul Anonim Sirketi, 2025) Kazak, Hasan; Mensi, Walid; Gündüz, Mehmet Akif; Kılıçarslan, Abdullah; Akcan, Ahmet Tayfur
    This study investigates the relationship between gold prices, agricultural commodity prices (rice, flour, bean, chickpea, lentil, and sugar), and Turkish stock markets. Using the Fourier Toda-Yamamoto causality test and wavelet coherency approach, we find that gold prices significantly influence agricultural commodity prices, emphasizing gold's pivotal role in agricultural market dynamics. Portfolio diversification incorporating gold and agricultural commodities mitigates risks, enhancing portfolio resilience. The BIST100 index and agricultural spot commodity prices exhibit differential impacts depending on specific products. Wavelet coherence analysis reveals time-varying dependencies, suggesting investors leverage their investments in BIST100 and gold for diversification with agricultural commodities. Our findings present agricultural commodities as alternative investment instruments, subject to favorable market conditions. The portfolio analysis uncovers nuanced relationships between commodities and indices, guiding investors in diversification and real asset investments. This research contributes novel perspectives, emphasizing the viability of agricultural commodities in diversified portfolios.
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    Consumer behavior in the shadow of COVID-19 and mental health: A bibliometric analysis of international scientific literature in Web of Science and Scopus
    (EnPress Publisher, LLC, 2024) Kazak, Hasan; Kılıçarslan, Abdullah; Yaralı, Mustafa Cihan; Okka, Osman
    The aim of this study was to make a quantitative contribution to the impact of COVID-19 and Mental on consumer behavior. For this purpose, the data in the Scopus and WoS databases until 5 February 2024 were examined using bibliometric analysis. The data obtained within the scope of this study were classified and analyzed using the VOSviewer program developed for scientific mapping analysis. In the evaluations, 180 studies in the Web of Science database and 371 documents in the Scopus database were identified, and when duplicate studies were combined, 426 studies were included in the analysis. According to the results of the analysis, the journal with the highest number of publications is “Journal of Retailing and Consumer Services”; the organization with the highest number of publications is “Department of management sciences, University of Okara” and “North-West University”; the authors with the highest number of publications and citations are “Wang, Xueqin” and “Yuen, Kum Fai”; and the most cited studies are “Laato et al.” and “Goolsbee and Syverson”. This study provides a comprehensive analysis of the studies on the impact of COVID-19 and mental factors on consumer behavior and makes a qualified contribution to the literature with an important opening.
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    Güneydoğu Avrupa iş birliği üyesi ülkelerde ekonomik özgürlük endeksi ile yurtiçi krediler arasındaki ilişkilerin panel veri yöntemiyle incelenmesi
    (Nevşehir Hacı Bektaş Veli Üniversitesi, 2023) Kazak, Hasan; Kılıçarslan, Abdullah
    Bu çalışmanın amacı, Güneydoğu Avrupa iş birliği üyesi ülkelerden Arnavutluk, Bulgaristan, Yunanistan, Hırvatistan, Romanya, Slovenya ve Türkiye açısından ekonomik özgürlüklerin özel sektöre yönelik yurtiçi krediler üzerindeki etkisini değerlendirmektir. Bu bağlamda, ekonomik özgürlük ve özel sektöre yönelik yurt içi krediler arasındaki ilişkiyi ve yönünü ortaya çıkarmak üzere kesirli frekans esnek Fourier form paneli eşbütünleşme testi ve tek frekanslı panel fourier granger nedensellik testi kullanılmıştır. Çalışmada 1995-2021 dönemi yıllık verileri üzerinden analizler gerçekleştirilmiştir. Ampirik analizler sonucunda, eşbütünleşme testleriyle özel sektöre yönelik yurt içi krediler bağımlı değişkeni ile ekonomik özgürlükler bağımsız değişkeni arasında istatistiksel olarak anlamlı uzun dönemli ilişki olduğu ortaya konulmuştur. Kısa dönemli ilişkinin analiz edildiği Fourier Toda-Yamamoto Nedensellik Testi sonuçları ise Arnavutluk, Bulgaristan ve Slovenya için ekonomik özgürlükler değişkeninden özel sektöre yönelik yurt içi krediler değişkenine doğru tek yönlü nedensellik ilişkisinin olduğunu diğer ülkeler için ise herhangi bir nedensellik ilişkisinin olmadığını ortaya koymuştur. Buna göre ekonomik özgürlükler uzun dönemde bankalar tarafından özel sektöre yurt içi kredi tutarını etkilemektedir. Kısa dönemli ilişkilerde ise sadece üç ülke için (Arnavutluk, Bulgaristan ve Slovenya) ekonomik özgürlüklerden özel sektöre yönelik yurt içi krediler değişkenine doğru tek taraflı nedensellik ilişkisi söz konusudur.
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    Profitability determinants in Turkish banking: comparing Islamic and conventional banks under inflation and bond rate effects
    (Emerald Publishing, 2025) Kazak, Hasan; Akcan, Ahmet Tayfur; Akcan, Ahmet Tayfur; Kılıçarslan, Abdullah
    This study aims to compare the effects of exogenous factors, particularly inflation and bond interest rates, on the profitability of Islamic (participation) and conventional banks in Türkiye. Design/methodology/approach: The Fourier function-enhanced Johansen cointegration test was applied to data covering the period 2005/Q1–2023/Q4. The stationarity levels of the variables were determined using the Zivot–Andrews unit root test, followed by a cointegration test, and long-run coefficient estimates were evaluated. Findings: The results indicate that inflation positively affects bank profitability in both Islamic and conventional banking sectors, whereas bond interest rates have a negative impact. No significant difference was observed between the two banking models in terms of these effects. Furthermore, contrary to existing literature suggesting a positive relationship between bond interest rates and bank profitability, this study provides empirical evidence of a negative long-run impact. Originality/value: This study contributes to the literature by demonstrating the negative effect of bond interest rates on bank profitability, challenging conventional claims. In addition, it highlights the similar sensitivities of Islamic and conventional banks to macroeconomic factors, providing valuable insights for policymakers. The findings have significant implications for both the Turkish banking sector and the global financial system.