Ekonomi Bölümü Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.11779/1936
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Review Article Pearl’in Nedensel Modelinin Ampirik Araştırmadaki Rolü(2024) Bılgel, FıratThis paper underscores the necessity of formulating precise research questions that clarify causal relationships rather than simply identifying correlations and highlights the perils of relying solely on regression analysis in tackling complex causal inquiries without causal diagrams or structural causal models. It introduces Judea Pearl's causal epistemology, including causal graphs, structural causal models, and do-calculus as vital tools for estimating causal effects. It extends to the challenges of confounding and collider effects, the application of do-calculus with basic examples from Law & Economics and the advancements in causal discovery methods through constraint-based algorithms. The paper also offers a brief roadmap on best practices for identification and estimation.Article Quality of Government Cohesion Across EU Regions: Success or Failure(Routledge Journals, Taylor & Francis Ltd, 2026-01-16) Karahasan, Burhan CanRegional differences in institutions is a threat for political and economic integration. In this paper, we analyse the institutional convergence across regions of the European Union (EU). Preliminary results show that there is continuous improvement fostering institutional convergence. However, heterogeneity analyses point-out that the speed of institutional development is influenced by the enlargement phases of the union. Additional results indicate that the regions of the Central and Eastern European (CEE) countries and the southern regions belonging to Greece and Spain experience faster institutional convergence. Accordingly, the enlargement process, fostering further heterogeneity, is an important element to improve the institutional quality of the new EU members. However, temporal convergence trends show that the dynamics of institutional convergence shift over time, reflecting the non-stationary evolution of success-failure cases.Article Citation - WoS: 2Citation - Scopus: 4Heterogeneous Impact of Innovation on Economic Development: Evidence from EU Regions(Elsevier Sci Ltd, 2026-03-01) Pinar, Mehmet; Karahasan, Burhan CanThis paper investigates the heterogeneous impact of innovation on economic development across European Union (EU) regions, with a focus on regional competitiveness driven by innovation-based capabilities. While innovation is a key driver of economic growth, its effects are not uniformly distributed. Using the Multiscale Geographically Weighted Regression models, the study examines how different dimensions of innovation (technological readiness, business sophistication, and overall innovation capacity) affect regional GDP per capita. The results show that regions with higher innovation-based competitiveness generally achieve higher income levels. However, the impact of innovation is spatially uneven. While core EU regions (particularly, in Northern and Western Europe) benefit more strongly from innovation, peripheral regions (in Southern and Eastern Europe) often experience weaker and in some cases even negative, effects. These results highlight the importance of accounting for spatial variation when designing innovation and cohesion policies. The paper calls for tailored, place-based strategies to address regional disparities in innovation-driven development and suggests that current EU policies should be adjusted to better support lagging regions.Book Part Precarious Work and Individual Deprivation During the Post-COVID Era: Lessons From Turkey(Edward Elgar Publishing Ltd., 2025-05-13) Kinikoğlu, C.N.; Karahasan, B.C.Book Part Citation - Scopus: 2New Money: Central Bank Digital Currencies(Peter Lang AG, 2019) Karamollaoğlu, Nazlı; Tuncay, BernaPayment systems have been evolving along with technological advancements in the last couple decades. The introduction of different forms of electronic banking, the advance of Internet banking services, and advances in mobile phone and mobile payment technology have reduced the use of physical currency. Additionally, the first mover cryptocurrencies, bitcoin and its various alternatives (e.g., Ether, Litecoin), have been expanding their footprints, despite the volatility of their prices and the issues with their capability. These developments pose both opportunities and threats for Central Banks, particularly in the formulation of monetary policy and regulation of payment systems. Increased adoption of cryptocurrencies for payment transactions could undermine central banks' monetary policy missions as their policy power over the money in circulation would weaken. Weakened monetary policy control on the central bank side would risk financial stability. On the other hand, cryptocurrencies may also have positive impacts on the economy through various channels such as cost and time driven payment market efficiencies, financial inclusion, cashless society, and smaller informal sector. A central bank digital currency (CBDC) may have various characteristics related to its store of value, availability, settlement time, wallet and transaction limits, extent of use, being interest bearing or not and level of anonymity. While each characteristic has its own pros and cons, decisions on the CBDC characteristics need to be made by taking into account the country's circumstances, priorities, and ultimate policy objectives. © Peter Lang GmbH Internationaler Verlag der Wissenschaften Berlin 2019. All rights reserved.Article Citation - WoS: 6Citation - Scopus: 8Arbitrageur Behavior in Sentiment-Driven Asset-Pricing(World Scientific Publishing, 2021-09-01) Kılıç, Erdem; Oğuzhan, Göksel; Goksel, OguzhanThis study aims to model arbitrageur behavior in a sentiment-driven capital asset-pricing model under the premise of reflecting a more detailed decomposition of investor types in the equity markets. We explore the behavior and the impact of arbitrageur behavior, particularly, on pricing and on key financial ratios. We observe that the prevalence of the arbitrageur counteracts the effects of unsophisticated investors, resulting in a lower volatility of the price–dividend ratio, lower predictive power of changes in consumption for future price changes and lower equity premium. Thus, the results of our research allow us to conjecture that the extrapolation bias in the prices is lowered.Book Part Fiyat Hareketleri(Astana Yayınları, 2021) Kılıç, ErdemBir piyasa ekonomisinde fiyat kavramı büyük bir öneme sahiptir. Piyasada mevcut olan bütün mal ve hizmetler fiyatları ile değerlendirilip işlem görmektelerdir. Belirlenmiş olan fiyata göre alım satım miktarı gerçekleşmektedir. Serbest piyasa ekonomisinde, fiyat düzeyi bir gösterge olarak üretim maliyetini,arz-talep dengesini, piyasadaki üretim miktarını ve spekülatif eğilimleri yansıtır. Piyasalardaki arz ve talep arasındaki koordinasyonu sağlayan unsur fiyat mekanizmasıdır. Adam Smith’in tabiri ile piyasalar ‘görünmez bir el tarafından’ yönlendirilmektedir. Bu görünmez elin işlevselliği fiyat mekanizmasının ne ölçüde etkin çalıştığı ile ölçülebilir.Book Part Mathematics for Social Sciences(Emerald Group Publishing Limited, 2016) Öztürk, MuratAll students enrolled in Business and Economics programs receive basic tarining in quantative methods used in subject that required mathematics and statistics.Article Article Citation - Scopus: 24Epidemiology and Economic Burden of Serotonin Syndrome With Concomitant Use of Serotonergic Agents: a Retrospective Study Utilizing Two Large Us Claims Databases(Physicians Postgraduate Press Inc., 2017-12-28) Alley, Stephanie; Nguyen, Charles T.; McCarron, Robert M.; Wang, Zhixiao; Xie, Lin; Başer, OnurObjective: Serotonin syndrome (SS) is an adverse drug reaction occurring among patients receiving serotonergic agents (SAs), and although SAs are commonly prescribed, the epidemiology and economic burden of SS with concomitant SA use have not been comprehensively examined. The objective of this study was to investigate the prevalence, incidence, and economic burden of SS with SA use. Methods: A retrospective cohort study was conducted using Veterans Health Administration (VHA) records (identification period: October 1, 2008-September 30, 2012) and commercially insured patient records (Intercontinental Marketing Services PharMetrics Plus; identification period: January 1, 2010-December 31, 2013). Cohorts were based on drug classification and exposure: single monoamine oxidase inhibitor (MAOI), MAOIs in combination with SAs, single non-MAOI SA, and multiple non-MAOI SAs (2, 3, 4, ? 5). Participants were aged ? 18 years with continuous health plan enrollment for 12 months prior to the first SA claim. Outcomes were SS events (ICD-9-CM: 333.99), annual incidence and prevalence, related health care utilization and costs, and SS incidence relative risk. Results: Over 15 million patients were identified and categorized by SA prescription type. SS incidence in both populations decreased: 0.19%-0.07% (VHA) and 0.17%-0.09% (commercially insured). Overall SS prevalence decreased during the study period. Compared to single non-MAOI SA patients, SS incidence relative risk was highest among patients prescribed ? 5 non-MAOI SAs. Inpatient stays accounted for 4.35% (VHA) and 0.88% (commercially insured) of all SS events. Of SS-related inpatient stays, median costs were $8,765 (VHA) and $10,792 (commercially insured). Conclusions: SS incidence and prevalence and SS-related hospitalization risk among patients prescribed SAs were low in both populations. This study provides additional information regarding SS risk associated with SA use. © 2017, Physicians Postgraduate Press Inc. All rights reserved.