İşletme Bölümü Yayın Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/403
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Book Part Citation - WoS: 1Variables Affecting Innovation-Related Competitiveness in Turkey(Springer, 2009) Sakarya, A. OrcunInnovation's relation with competitiveness can be considered as a part of its emerging importance for the global economy. Accordingly, the main goal of this quantitative study is to foresee the main "macro" variables affecting Turkey's innovation-related competitive performance in the long run by considering innovation concept, both in the global and European Union basis. Following the introductory part and literature review, the relationship between innovation and competitiveness has been emphasized in Section 5.3. In Section 5.4, European Union Innovation Scoreboard has been mentioned. In Section 5.5 and the final section of the chapter, innovation concept has been discussed as an extension to Summary of Innovation Index and factors affecting innovation-related competitiveness in Turkey have been examined. First, a brief exploratory factor analysis has been conducted to identify the relevance of selected variables. Then, for investigating factors affecting medium and long-run innovation-related competitiveness in the country, a VAR model has been utilized. Granger's causality test has also been used to detect the cause-effect relationships between variables. As a result, it has been deduced that basic variables affecting innovation-related competitiveness are the number of patent applications and per capita R&D expenses. Moreover, it is also concluded that the Gross Domestic Product may also be relatively important in the long run.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: 1Citation - Scopus: 2A New Causal Discovery Heuristic(Springer, 2018) Tarim, S. A.; Ozkan, I.; Prestwich, S. D.Probabilistic methods for causal discovery are based on the detection of patterns of correlation between variables. They are based on statistical theory and have revolutionised the study of causality. However, when correlation itself is unreliable, so are probabilistic methods: unusual data can lead to spurious causal links, while nonmonotonic functional relationships between variables can prevent the detection of causal links. We describe a new heuristic method for inferring causality between two continuous variables, based on randomness and unimodality tests and making few assumptions about the data. We evaluate the method against probabilistic and additive noise algorithms on real and artificial datasets, and show that it performs competitively.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.