İktisat Bölümü Yayın Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/402

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Now showing 1 - 10 of 27
  • Article
    Citation - WoS: 1
    Legislation on Ottoman Copyright Law
    (Selcuk Univ, inst Turkish Studies, 2007) Çakmak, Diren; Cakmak, Diren; Siyaset Bilimi ve Uluslararası İlişkiler
    In this study the age of copyright law in Turkey is 157 years is determined and, the fact that copyright as a term has entered in our country in the year 1850 with Statute of Encumen-i Danis, the first legal text on copyright is Statute of Copyright dated 1857, Statute of Copyright and Translation dated 1870 is compensatory legal text of Statute of Copyright, the second legal text on copyright is Code of Copyright dated 1910 is determined.
  • Article
    Supply Response of the Wine Industry in Turkey
    (Asia Life Sciences, 2011) Sakarya, Arif Orçun; Sakarya, Arif Orcun; Temiz, Dilek; Temiz, Dilek; İşletme; Uluslararası Ticaret ve Finansman
    Regarding the high wine production potential; the main goal of the study is to discover whether there is a long run relationship between wine production, wine net export and demand and to display the possible contribution of latter variables on wine production in Turkey. Following the wine market overlook; related contribution is analyzed by using annual time series data for the years 1961-2005, the Johansen cointegration test and ordinary least squares method. The empirical findings have shown that, as the wine net export or the wine demand increases, wine production also increases in Turkey. Cointegration test has proved that there is a long run relationship between wine production and the other variables.
  • Article
    Citation - WoS: 11
    Citation - Scopus: 9
    Ppp Hypothesis and Temporary Structural Breaks
    (Economics Bulletin, 2017) Corakci, Aysegul; Omay, Tolga; Emirmahmutoglu, Furkan; Çorakcı, Ayşegül; Tolga, Omay; Çankaya Meslek Yüksekokulu; İktisat
    In this study our aim is to explore a better testing strategy for the PPP hypothesis under a temporary structural break. For this purpose we use the exponential smooth transition (EST) function in the unit root testing framework and compare this methodology with the one that uses a Fourier function. Although the Fourier function is extensively used in the literature to test the validity of the PPP hypothesis under temporary breaks, this investigation shows that it leads to misleading results.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Model Selection Uncertainties and Model Averaging in Autoregressive Time Series Models
    (Isoss Publ, 2012) Islam, M. Qamarul; Yazıcı, Mehmet; Yazici, Mehmet; Islam, M.Qamarul; Qamarul Islam, M.; İktisat
    Selecting the correct lag order is necessary in order to avoid model specification errors in autoregressive (AR) time series models. Here we explore the problem of lag order selection in such models. This study provides an in-depth but easy understanding of the model selection mechanism to the practitioners in various fields of applied research. Several interesting findings are reported and through these the pitfalls of the model selection procedures are exposed. In particular, we show that the whole exercise of model selection and subsequent statistical inference invariably depends upon unknown entities, namely the true values of parameters in the model. The model averaging technique is proposed as an alternative to the common practice of model selection and it is shown that, as a result, the properties of post-model-selection estimates substantially improve.
  • Article
    Multiple linear regression model under nonnormality
    (Taylor & Francis Inc, 2004) Islam, M. Qamarul; Tiku, Moti L.
    We consider multiple linear regression models under nonnormality. We derive modified maximum likelihood estimators (MMLEs) of the parameters and show that they are efficient and robust. We show that the least squares esimators are considerably less efficient. We compare the efficiencies of the MMLEs and the M estimators for symmetric distributions and show that, for plausible alternatives to an assumed distribution, the former are more efficient. We provide real-life examples.
  • Article
    Citation - WoS: 9
    Citation - Scopus: 9
    Hysteresis and Stochastic Convergence in Eurozone Unemployment Rates: Evidence From Panel Unit Roots With Smooth Breaks and Asymmetric Dynamics
    (inst Badan Gospodarczych, 2022) Omay, Tolga; Hasanov, Mubariz; Corakci, Aysegul
    Research background: Studying the dynamic characteristics of unemployment rate is crucial for both economic theory and macroeconomic policies. Despite numerous research, the empirical evidence about stochastic behaviour of the unemployment rate remains disputable. It has been widely agreed that most economic variables, including unemployment rates, are characterized by both structural breaks and nonlinearities. However, a little work is done to examine both features simultaneously. Purpose of the article: In this paper, we analyse the stationarity properties of unemployment rates of Euro area member countries. Also, we aim to test stochastic convergence of unemployment rates among member countries. Our empirical procedures explicitly allow for simultaneous gradual breaks and nonlinearities in the series. Methods: This paper develops a new unit root test procedure for panel data, allowing for both gradual structural breaks and asymmetric adjustment towards equilibrium. We carry out Monte Carlo simulations to examine small sample performance of the proposed test procedure and compare it to the existing test procedures. We apply the newly proposed test to examine the stochastic properties of the unemployment rates of Euro-member countries as well as relative unemployment rates vis-a-vis the Eurozone unemployment rate. Findings & value added: We find that the newly developed test procedure outperforms existing tests in highly nonlinear settings. Also, these tests reject the null hypothesis of unit root in more cases when compared to the existing tests. We find stationarity in the series only after allowing for structural breaks in the data generating process. Allowing for nonlinear and asymmetric adjustment in addition to gradual breaks provides evidence of stationarity in more cases. Furthermore, our results suggest that relative unemployment rate series are stationary, providing evidence in favour of stochastic convergence in unemployment rates. Overall, our results imply a limited room for coordinated economic policy to fight unemployment in the Eurozone.
  • Article
    Citation - WoS: 2
    Citation - Scopus: 2
    On the Heterogeneous Effects of Tax Policy on Labor Market Outcomes
    (Wiley, 2022) Adnan, Wifag; Arin, Kerim Peren; Corakci, Aysegul; Spagnolo, Nicola
    Many recent studies have documented the heterogeneous effects of government-spending shocks on major macroeconomic variables, particularly on output. We delve deeper into the heterogeneous effects of fiscal policy innovations, but focus on the tax policy innovations and their impact on the labor market, while accounting for gender, race, ethnicity, and the business cycle. Using microlevel data from the United States, we find that: (i) Tax shocks have varying employment effects depending on gender, race, and the stage of the business cycle; (ii) Sector, industry, and occupational segregation in labor markets by gender, race, and ethnicity can explain most of the variation in response to fiscal policy shocks.
  • Article
    Citation - WoS: 2
    Citation - Scopus: 1
    Impact of Exchange Rate and Customs Union on Trade Balance at Commodity Level of Turkey With Eu (15)
    (Routledge Journals, Taylor & Francis Ltd, 2011) Islam, M. Qamarul; Yazici, Mehmet; Qamarul Islam, M.
    This paper investigates the short-run and long-run impact of exchange rate and customs union on the trade balance at commodity-group level of Turkey with EU (15). Bounds testing approach is employed where a new strategy in the model selection phase is odopted ensuring that optimal model is selected from those models satisfying both diagnostics and cointegration. Results indicate that in the short-run exchange rate matters in determination of trade balance of 13 commodity groups out of 21 and customs union in 8 cases. Pattern of response of trade balance to exchange rate does not suggest a J-curve effect in any of cases. As for the long-run effect, neither exchange rate nor customs union has a statistically significant effect on trade balance of any of commodity groups, suggesting that those significant short-run effects don't last into long-run.
  • Article
    Citation - WoS: 10
    Citation - Scopus: 7
    Distinct Asymmetric Effects of Military Spending on Economic Growth for Different Income Groups of Countries
    (Taylor & Francis Ltd, 2023) Ocal, Nadir; Yildirim, Julide; Karadam, Duygu Yolcu; Yolcu Karadam, Duygu
    Although possible asymmetries for univariate and multivariate dynamics have been the focus of interest in many areas of economic explorations, it seems that most of the research on military expenditure - economic growth nexus has tended to assume linear relationships. This paper aims to examine possible nonlinearities in military expenditure-economic growth nexus employing data for a sample of 103 countries covering the 1988-2019 period. For this purpose, Panel Smooth Transition Regression, PSTR, models are estimated not only for all countries' sample but also for low income, middle income, and high-income countries' subsamples to reveal possible distinct asymmetric relationships for country groups with different income levels. Empirical results for the whole sample, low income and middle income groups indicate that military expenditure not only governs the regime change, but also low and high levels of military expenditure have distinctive and rising negative effects on economic growth with dissimilar threshold effects. Moreover, empirical findings also indicate that net arms exports govern regime change for high income countries, and as net arms exports rise, the negative impacts of military expenditure on economic growth become deeper.
  • Article
    Citation - WoS: 4
    Citation - Scopus: 5
    Analysis of Distinct Asymmetries in Financialintegration-Growthnexus for Industrial, Emerging and Developing Countries
    (Wiley, 2022) Ocal, Nadir; Yolcu Karadam, Duygu
    This paper examines the threshold conditions in financial integration and growth relationship for a large set of threshold variables and different income group of countries employing Panel Smooth Transition Regression Models. Except developing countries, our findings strongly indicate nonlinear dynamics and imply that the impact of financial integration on growth is asymmetric depending on a number of indicators such as countries' degree of institutional quality, financial sector development, trade openness, budget deficit, inflation volatility and the level of financial integration. Our results show that these threshold effects substantially differ for emerging and industrial countries. As far as whole set of countries is concerned, our findings imply that countries having developed financial systems, qualified institutions and stable macroeconomic environment benefit from financial integration. Moreover, threshold effects are stronger and different for emerging countries compared to the industrial countries. Unlike emerging economies, higher levels of financial integration and trade openness decrease benefits from financial openness for the industrial countries. Besides, high fiscal deficit has more pronounced negative effect on the growth of the industrialized countries compared to emerging economies and other indicators.