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    Analysis of customer lifetime value and marketing expenditure decisions through a Markovian-based model
    (Elsevier, 2014) Ekinci, Yeliz; Ulengin, Fusun; Uray, Nimet; Ulengin, Burc
    The general aim of this study is to provide a guide to the future marketing decisions of a firm, using a model to predict customer lifetime values. The proposed framework aims to eliminate the limitations and drawbacks of the majority of models encountered in the literature through a simple and industry-specific model with easily measurable and objective indicators. In addition, this model predicts the potential value of the current customers rather than measuring the current value, which has generally been used in the majority of previous studies. This study contributes to the literature by helping to make future marketing decisions via Markov decision processes for a company that offers several types of products. Another contribution is that the states for Markov decision processes are also generated using the predicted customer lifetime values where the prediction is realized by a regression-based model. Finally, a real world application of the proposed model is provided in the banking sector to show the empirical validity of the model. Therefore, we believe that the proposed framework and the developed model can guide both practitioners and researchers. (C) 2014 Elsevier B.V. All rights reserved.
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    An analysis of the interaction among savings, investments and growth in Turkey
    (Routledge Journals, Taylor & Francis Ltd, 2009) Yenturk, Nurhan; Ulengin, Burc; Cimenoglu, Ahmet
    Turkey has been implementing tight fiscal and monetary policies for years. These policies rely on the basic understanding that savings trigger growth and investments. However there are alternative theoretical discussions and empirical findings related to the interaction among these variables. In this study, while one of the purposes is to analyse the interaction among these variables for the Turkish case, the other is to try to bring an insight for other developing countries for the issues such as data production, econometric analysis, and as well as making policy suggestions in line with the evidence from the Turkish case. The findings of this study show that, it is the growth that induces both savings and investments. Hence, it is necessary to question policies that assume it is the savings triggering growth and investments.