EKOIST Journal of Econometrics and Statistics

2018 - 2026

Current editor(s): Aycan HEPSAĞ

From Istanbul University, Faculty of Economics
Contact information at EDIRC.
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2026, articles 36

The Relationship Between the Health Services Price Index and The Real Effective Exchange Rate Index in Turkey: A Frequency Domain Causality Analysis pp. 21-41

Mustafa Ozer, Veysel Inal and Mustafa Kirca

2024, articles 41

Effect of Exchange Rate Volatility on Export Volume in BRICS and G7 Countries: Panel Data Analysis pp. 1-12

Zeynep Morçiçek

A Monte Carlo Study of the Residuals of System Estimators in the Presence of Multicollinearity pp. 10-25

Emmanuel Oduntan

Bubble Spillover of Assets: Evidence from the Exchange Rates of Some Newly Industrialized Countries pp. 22-33

Savaş Tarkun and Mehmet Çınar

Examination of Stocks in the Istanbul Stock Exchange 100 Index With Clustering and Association Rules Analysis pp. 34–53

Damla Yalçıner Çal and Meltem Karaatlı

Operational Implications of Time Window Relaxation in Vehicle Routing Problems pp. 54-81

Ahmet Çağlar Saygılı and Halim Kazan

A Model Proposal to Measure the Effect of University Students’ Innovation Capacity on Their Technological Innovation Tendencies pp. 82-96

Ebru Ilgat and Noyan Aydın

Relationship between Financial Services Confidence Index and Stock Market Returns: Toda-Yamamoto and Asymmetric Causality Analysis pp. 97-108

Yunus Emre Turan and Dinara Zubaidullina

The Effect of ESG (Environmental, Social And Governance) Scores on Company Performance: Evidence from the Manufacturing Industry in Turkey pp. 109-117

Halil İbrahim Akpınar and Mehmet Sabri Topak

Analysing the Linkage between Human Development and Environmental Quality: Fresh Evidence from Türkiye pp. 118-132

Bahar Durgun

Basic Innovation Indicators Affecting Exports According to Technology Intensity: An Application Based on Time Series Analysis for Türkiye pp. 133-150

Sevda Yapraklı and Fatma Kanca Kervan

The Role of R&D Expenditures on High Technology Product Exports: A Panel Causality Analysis for OECD Countries pp. 151-160

Sema YaÅŸar and Dilan Dayanan

Evaluation of Türkiye’s Domestic Prices and Exchange Rate Relationship with State Space Models pp. 161-171

Fikriye Ceren Bostancı and Selçuk Koç

2023, articles 39

Winter Rice Trend Analysis and Change Point Detection in Assam’s North Bank Plains Zone (NBPZ): A Non-Parametric Approach pp. 1-9

Rabijita Buragohain, Hemanta Saikia and Dhruba Das

Analysis of Skills and Qualifications Required in Data Scientist Job Postings Based on the Pareto Analysis Perspective Using Text Mining pp. 10-25

Erkan Işığıçok, Sadullah Çelik and Dilek Özdemir Yılmaz

Asset Allocation with Combined Models Based on Game-Theory Approach and Markov Chain Models pp. 26-36

Salih Çam

NARDL Yönteminin Kripto Para Birimlerine Yönelik Bir Monte Carlo Simülasyon Analizi pp. 37-48

Abdülsamet Aça and Kemal Dinçer Dingeç

This research discusses the causal relationship among the exchange rates, 10-year bond yields, and Central Bank policy rates with regard to the countries known as the Fragile Five (F5) by comparing them to global indicators such as gold, Bitcoin price, and the Volatility Index (VIX). The study takes into consideration the bond yields, exchange rates, and interest rates of Türkiye, India, Indonesia, South Africa and Brazil in terms of their causal relationship with one another. The study also identifies some causal relationships among gold, bitcoin, and VIX with each other as global indicators by using the Toda Yamamoto approach to the Granger causality test. This study has arrived at the conclusion that a causal relationship exists between exchange rates and interest rates for Türkiye, Indonesia, and South Africa but not for Brazil or India. VIX is the most significant variable, as it is affected by seven different variables, including policy rates and different exchange rates. In addition, none of the variables are seen to Granger cause bitcoin’s price pp. 65-75

Emin Karataş and Ayyüce Memiş Karataş

Co2 Emisyonlarını Etkileyen Faktörlerin Zamanla Değişen Katsayılı Parametrik Olmayan Panel Veri Modelleri ile Analizi pp. 76-88

Selahattin Güriş and Sevcan Çağlayan

Greenhouse Gas Emission-Based K-Means and Hierarchical Cluster Analysis: The Case of the G20 pp. 89-100

Mutlu Tüzer and Seyhun Doğan

Analysis of the Relationships between Compulsory Health Spending, Doctors, Hospital Beds and Hospital Stays for Turkiye pp. 101-111

Esra Nazmiye Kılcı

A Comparison of Forecasting Performance of PPML and OLS estimators: The Gravity Model in the Air Cargo Market pp. 112-128

Gizem Kaya, Umut Aydın and Burç Ülengin

The Hybrid New Keynesian Phillips Curve: An Application For Türkiye pp. 129-146

Havva Koç

Do Shocks Permanently Affect Ecological Balance Per Capita in Brazil, South Africa, and New Zealand? pp. 147-160

Mehmet Erdoğmuş

A Comparative Perspective on Multivariate Modeling of Insurance Compensation Payments with Regression-Based and Copula-Based Models pp. 161-171

Övgücan Karadağ Erdemir

Determining the Relationship Between Capital Adequacy Ratio and Financial Ratios with Panel Data Analysis: A Study on the Turkish Banking Sector pp. 172–182

Batuhan Medetoğlu

Key Macroeconomic Variables under Exchange Rate Volatility: Time-Varying Causality in the Presence of Structural Breaks and Nonlinearity pp. 49-64

Oğuz Tümtürk

Convergence of Military Expenditures in MENA Countries: Evidences from a Fourier Panel Unit Root Test with Multiple Breaks pp. 183-199

İbrahim Sezer Belliler

2023, articles 38

Testing Linear and Nonlinear Relationships Between Foreign Direct Investment and Fossil Energy Consumption in Fragile Five Countries pp. 1-77

Ali Çelik

Which Factors Drive The Resource Efficiency in Circular Economy? A Panel Data Regression Analysis pp. 19-34

Gonca Yılmaz

Investigating the Relationship Between Financial Development and Income Inequality in Developed and Developing Countries: An Application of Canonical Correlation Analysis pp. 35-52

Çiğdem Yılmaz Özsoy

Production Losses Due to Technical Inefficiency: A Panel Data Analysis on the Case of BRICS-T Countries pp. 53-73

Nadide YiÄŸiteli

Semi-Parametric Modeling of Churn Confounding Competing Risks Using Time-Dependent Covariates Among Mobile Phone Subscribers in Kenya pp. 75-86

Ndilo B. Fwaru, Leonard K. Alii and Jerita J. Mwamb

Predicting Countries’ Development Levels Using the Decision Tree and Random Forest Methods pp. 87-104

Batuhan Özkan, Coşkun Parim and Erhan Çene

The Impact of News Related Covid-19 on Exchange Rate Volatility:A New Evidence From Generalized Autoregressive Score Model pp. 105-126

Deniz Erer

Why Can Smes Not Adopt Green Innovation? An Assessment Via Fuzzy ISM-MICMAC-DEMATEL pp. 127-148

Seda Yıldırım, Gözde Koca and Özüm Eğilmez

A Study on Interregional Determinants of Infant Mortality Rate in Turkey with Spatial Econometric Analysis pp. 149-170

Ahmet Koncak and Gökhan Konat

A Quantitative Spatial Exploratory Analysis on Fast Consumer Goods, Shopping Trips, and Discount Supermarket Revenues: The Case of Istanbul pp. 171-198

Mete Başar Baypınar, Cem Beygo, Gökalp Köseoğlu, Elifsu Şahin and Burcu Aksoy Sertbakan

Evaluating the Dynamics Affecting Tolerance Toward Migrants in Türkiye Using Statistical Analyses pp. 199-221

Hatice Gül Bozdeveci and Özlem Yorulmaz

A New Programming Language for Data Science: Julia pp. 223-241

Münevver Turanlı and Ünal Halit Özden

Health Econometrics Research: A Bibliometric Analysis from 1991 to 2020 pp. 243-264

Ebru Çağlayan Akay, Merve Ertok Onurlu and Özlem Ergüt

Analyzing the Relationship Between Financial Failure and KPI Score: An Application in the SASB Transportation Sector pp. 265-288

Buse Öktem

The Effect of Psychological Empowerment on Employee Performance: The Mediating Role of Psychological Ownership pp. 289-305

Hilal Tanyıldızı and Ebru Doğan

2022, articles 37

Improving Forecast Accuracy Using Combined Forecasts with Regard to Structural Breaks and ARCH Innovations pp. 1-25

Daud Ali Aser and Esin Firuzan

Performance Evaluation of G20 Countries’ Fight Against COVID-19 Using Multiple Criteria Decision-Making Methods pp. 27-52

Seda Karakaş Geyik, Mehmet Hakan Satman and Gülin Kalyoncu

Hybrid Approaches in Financial Time Series Forecasting: A Stock Market Application pp. 53-68

Canberk Bulut and Burcu Hüdaverdi

Global Uncertainty and Exchange Rate Volatility pp. 69-84

Oğuz Tümtürk

The Validity of The Neo-Fisher Effect in The Period of Explicit Inflation Targeting: An Econometric Analysis on Turkey pp. 85-105

Sevda Yapraklı

Chasing Volatility of USD/TRY Foreign Exchange Rate: The Comparison of CARR, EWMA, and GARCH Models pp. 107-127

Yakup Ari

A Sudden Stops in International Capital Flows: The Case of Turkey pp. 129-148

Emine Ebru Er and Cihan Tanrıöven

The Asymmetric Relationship Among Food Prices, the Exchange Rate, and Oil Prices in Turkey pp. 149-169

Hüseyin İçen, Nimet Melis Esenyel İçen and Buğra Polat

Investigating the Impact of the COVID-19 Pandemic on Economic Activities Using Multidimensional Scaling and K-Means Clustering Analysis pp. 171-198

Muhammet Atalay

Association Rules Mining on Retail Data pp. 199-211

Hatice Dağaslanı and Özlem Deniz Başar

The Impact of Democracy on Environmental Degradation in OECD Countries pp. 213-235

Neslihan Ursavaş

A Review on the Interaction Among Gold, Equity, Currency Markets, and the Volatility Spillover Effect During the Post-2000 Era in Türkiye pp. 237-256

Nazan Şak and Hatice Gökçen Öcal Özkaya

Analyzing the Efficient Market Hypothesis with the Structural Break and Nonlinear Unit Root Tests: An Application on Borsa Istanbul pp. 257-282

Müge Özdemir

2022, articles 36

Risk and returns are the most important parametres in stock analysis. Therefore, the literature contains several studies to identify variables that affect risk and return. The effects of these variables on risk and return may asymmetric. This study analyzes the asymmetric effects of financial ratios of companies on their risks. The short and long-term asymmetric effect of the increase and decrease in financial ratios on risk is reviewed by the Panel-Nonlinear Autoregressive Distributed Lag (Panel NARDL) model. In the study used the 2005Q1 from period 2019Q4 data of 15 companies listed in the Nonmetallic Mineral Products sector is used. Beta coefficient, as a proxy for systematic risk, is employed as the dependent variable ratio of current ratio, total debts ratio, cash-to-cash cycle, return on equity, and market value book value are the independent variables. According to the analysis results was found an asymmetrical relationship between the risk of companies and current ratio, cash-to-cash cycle and market-to-book value in the long term. But, no asymmetrical relationship is observed between risk and return on equity and total debt ratio; rather, the relationship is symmetrical. In the short-run, there was no asymmetrical relationship between risk and financial ratios. The achieved results are important in explaining the factors that effects stock movements pp. 1-20

Kubra Yilmaz and Suleyman Kale

Does Change over Time the Causal Relationship between Economic Growth and Foreign Trade in Turkey? pp. 43-62

Gulcin Kendirkiran and Furkan Emirmahmutoglu

Using The Analytic Hierarchy Process For Store Manager Selection: A Real Case Study pp. 63-76

Eylem Acar and Gulcan Karpuz Enucuk

Applications of “Under the Pillow” Gold in Turkey pp. 77-92

Server Demirci, Selahattin Guris, Levent Cinko, Turgut Un and Saban Kizilarslan

Spatial Econometric Models and The Analysis of the Determinants of Internal Migration in Turkey pp. 93-110

Suna Tatli and Ferda Yerdelen Tatoglu

Factors Affecting Innovation in OECD Countries pp. 111-136

Umut Akdugan and Nilhun Dogan

Can We Increase Health Expenditure Per Capita Through Higher Economic Growth? Empirical Evidence from Turkey pp. 137-152

Esra N. Kilci

An Empirical Analysis of Product Concentration and Income in High-Technology Exports pp. 153-185

Devran Sanli and Aziz Konukman

K-Means Cluster Analysis Based on Fossil Fuel Carbon Dioxide Emissions: The G20 Example pp. 187-203

Seyhun Dogan, Ebru Dogan and Mutlu Tuzer

Hybrid Ranking Proposal Based on Spatial Econometrics: An Example of European Economic Freedoms pp. 205-233

Serkan Cahit Dinc and Necati Alp Erilli

Does the Foreign Trade-Driven Competitive Power of Transition Economies Converge Toward that of EU14 Countries? Evidence from Fourier Panel Unit Root Test with Sharp and Smooth Breaks pp. 257-282

Oguzhan Ozcelik