İşletme Bölümü Yayın Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/403
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Article Citation - WoS: 1Local Actors' Actions in Turkish Cinema During the 1990s: a Political Economy Perspective(Routledge Journals, Taylor & Francis Ltd, 2019) Kalemci, R. ArzuThis study analyzes changes in Turkish cinema in the 1990s. During this time, Turkish cinema was exposed to changes resulting from globalization and the foreign domination of cinema that came along with it. More recently, Turkish cinema has seen noticeable growth. By adopting a political economy perspective, this study investigates how the local actors of Turkish cinema, which were on the defensive, were able to overcome significant challenges.Article Citation - WoS: 2Citation - Scopus: 3The Role and Current Status of Ifrs in the Completion of National Accounting Rules - Evidence From Turkey(Routledge Journals, Taylor & Francis Ltd, 2017) Ozturk, CanAs it is not a member of the European Union, Turkey has not yet adopted EU accounting directives by law. Instead, Turkish standard setting authority adopted International Financial Reporting Standards for entities that have public accountability and has recently prepared the draft Turkish financial reporting standard for non-publicly accountable entities that are subject to independent audit: Framework for Local Financial Reporting. This national standard is influenced by European accounting directive 2013/34, international financial reporting practices and UK experience in addition to national accounting rules.Article Citation - WoS: 30Citation - Scopus: 35Understanding Protestant and Islamic Work Ethic Studies: a Content Analysis of Articles(Springer, 2019) Kalemci, R. Arzu; Tuzun, Ipek Kalemci; Kalemci Tuzun, IpekThis study focuses on two main arguments about the secularization of Protestant work ethic (PWE) and the uniqueness of Islamic work ethic (IWE). By adopting a linguistic point of view, this study aims to grasp a common understanding of PWE and IWE in the field of work ethic research. For this purpose, 109 articles using the keywords PWE and IWE in their titles were analyzed using content analysis. The findings support the argument that emphasizes universally shared values of PWE. In addition, the findings reveal that IWE provides a unique perspective on how to improve organizational performance, but at the same time differs in work orientation and commitment across cultures.Article Citation - WoS: 18Citation - Scopus: 23Computing Non-Stationary (S, S) Policies Using Mixed Integer Linear Programming(Elsevier Science Bv, 2018) Xiang, Mengyuan; Rossi, Roberto; Martin-Barragan, Belen; Tarim, S. ArmaganThis paper addresses the single-item single-stocking location non-stationary stochastic lot sizing problem under the (s, S) control policy. We first present a mixed integer non-linear programming (MINLP) formulation for determining near-optimal (s, S) policy parameters. To tackle larger instances, we then combine the previously introduced MINLP model and a binary search approach. These models can be reformulated as mixed integer linear programming (MILP) models which can be easily implemented and solved by using off-the-shelf optimization software. Computational experiments demonstrate that optimality gaps of these models are less than 0.3% of the optimal policy cost and computational times are reasonable. (C) 2018 Elsevier B.V. All rights reserved.Article Citation - WoS: 21Citation - Scopus: 24Heuristic Policies for the Stochastic Economic Lot Sizing Problem With Remanufacturing Under Service Level Constraints(Elsevier Science Bv, 2018) Kilic, Onur A.; Tunc, Huseyin; Tarim, S. ArmaganIn this paper, we address the stochastic economic lot sizing problem with remanufacturing under service level constraints. The problem emerges in hybrid production systems where demand can be met via two alternative sources: manufacturing new products and remanufacturing returned products. The deterministic counterpart of this problem has been considered in the literature and it is shown to be NP-Hard. We focus on the case where period demands and returns are stochastic. The optimal solution to this problem is not a deterministic production schedule but a control policy, yet its structure has not yet been characterized. We propose two heuristic policies for the problem that make use of simple decision rules to control manufacturing and remanufacturing operations and present mathematical models thereof. (C) 2018 Elsevier B.V. All rights reserved.Article Citation - WoS: 42Citation - Scopus: 40Prediction of Bank Financial Strength Ratings: the Case of Turkey(Elsevier Science Bv, 2012) Ogut, Hulisi; Doganay, M. Mete; Ceylan, Nildag Basak; Aktas, RamazanBank financial strength ratings have gained widespread popularity especially after the recent financial turmoil. Rating agencies were criticized because of their ratings and failure to predict the bankruptcy of the banks. Based on this observation, we investigate whether the forecast of the rating of bank's financial strength using publicly available data is consistent with those of the credit rating agency. We use the data of Turkish banks for this investigation. We take a country-specific approach because previous studies found that proxies used for environmental factors (political, economic, and financial risk of the country) did not have any explanatory power and it is hard to find international data for other important factors such as franchise value, concentration, and efficiency. We use two popular multivariate statistical techniques (multiple discriminant analysis and ordered logistic regression) to estimate a suitable model and we compare their performances with those of two mostly used data mining techniques (Support Vector Machine and Artificial Neural Network). Our results suggest that our predictions are consistent with those of Moody's financial strength rating in general.. The important factors in rating are found to be profitability (measured by return on equity), efficient use of resources, and funding the businesses and the households instead of the government that shows efficient placement of the funds. (C) 2012 Elsevier B.V. All rights reserved.Article Citation - WoS: 9Citation - Scopus: 11Confidence-Based Reasoning in Stochastic Constraint Programming(Elsevier, 2015) Rossi, Roberto; Hnich, Brahim; Tarim, S. Armagan; Prestvvich, Steven; Prestwich, StevenIn this work we introduce a novel approach, based on sampling, for finding assignments that are likely to be solutions to stochastic constraint satisfaction problems and constraint optimisation problems. Our approach reduces the size of the original problem being analysed; by solving this reduced problem, with a given confidence probability, we obtain assignments that satisfy the chance constraints in the original model within prescribed error tolerance thresholds. To achieve this, we blend concepts from stochastic constraint programming and statistics. We discuss both exact and approximate variants of our method. The framework we introduce can be immediately employed in concert with existing approaches for solving stochastic constraint programs. A thorough computational study on a number of stochastic combinatorial optimisation problems demonstrates the effectiveness of our approach. (C) 2015 Elsevier B.V. All rights reserved.Article Citation - WoS: 13Citation - Scopus: 20Firm Leverage and Investment Decisions in an Emerging Market(Springer, 2010) Umutlu, MehmetIn this study, the effect of leverage on investment is analyzed by employing panel data methods for the Turkish non-financial firms that are quoted on Istanbul Stock Exchange. For one-way error component models, it is shown that there is a negative impact of leverage on investment for only firms with low Tobin's Q. These results are in conformity with the previous literature and agency theories of corporate finance stating that leverage has a disciplining role for firms with low growth opportunities. However, when the model is extended to include the time effects in a two-way error component model, the relation between leverage and investment disappears.Article Citation - WoS: 97Citation - Scopus: 119The Degree of Financial Liberalization and Aggregated Stock-Return Volatility in Emerging Markets(Elsevier Science Bv, 2010) Akdeniz, Levent; Altay-Salih, Aslihan; Umutlu, MehmetIn this study, we address whether the degree of financial liberalization affects the aggregated total volatility of stock returns by considering the time-varying nature of financial liberalization. We also explore channels through which the degree of financial liberalization impacts aggregated total volatility. We document a negative relation to the degree of financial liberalization after controlling for size, liquidity, country. and crisis effects, especially for small and medium-sized markets. Moreover, the degree of financial liberalization transmits its negative impact on aggregated total volatility through aggregated idiosyncratic and local volatilities. Overall, our results provide evidence in favor of the view that the broadening of the investor base due to the increasing degree of financial liberalization causes a reduction in the total volatility of stock returns. (C) 2009 Elsevier B.V. All rights reserved.