Browsing by Subject "Decision making--Mathematical models."

Now showing 1 - 4 of 4

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Explorations of self-selective social choice functions
(1999) Ünel, Bülent
In this study, we analyze self-selective social choice functions focusing on whether one can escape dictatoriality. Two ways are examined: In the first attempt, the set of social choice functions is restricted to tops only. With this restriction, selfselectivity turns out to be equivalent to dictatoriality. In the second, the set of prefence profiles restricted to single-peaked ones. Here we show that there are some self-selective social choice functions which are not dictatorial.
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Measuring self-selectivity via generalized Condorcet rules
(2011) Altuntaş, Açelya
In this thesis, we introduce a method to measure self-selectivity of social choice functions. Due to Koray [2000], a neutral and unanimous social choice function is known to be universally self-selective if and only if it is dictatorial. Therefore, in this study, we confine our set of test social choice functions to particular singleton-valued refinements of generalized Condorcet rules. We show that there are some non-dictatorial self-selective social choice functions. Moreover, we define the notion of self-selectivity degree which enables us to compare social choice functions according to the strength of their selfselectivities. We conclude that the family of generalized Condorcet functions is an appropriate set of test social choice functions when we localize the notion of self-selectivity.
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Multicriteria ABC classification with AHP method: an application
(1996) Erdinç, Emrah
The traditional ABC classification is an inventory management technique that is applied by many companies in different industries. The method classifies the items in the inventory as class A. B. and C. The classification enables the managers to exert different levels of control on each class according to their importance for the company. Class A is constituted of the most important items and class C is constituted of the least important ones. Class B items have intermediate importance for the company. The Traditional ABC Classification method uses only one criterion in order to classify the items, however management may need to consider multiple criteria. The Multicriteria ABC Classification method provides a solution to this problem. This method also enables the managers to incorporate their judgments into the analysis. In this thesis both the traditional and the multicriteria ABC classification methods are applied to the inventory of a Turkish pharmaceutical company and the results are compared. The Analytic Hierarchy Process (AHP) technique is utilized in order to conduct the multicriteria inventory classification.
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Status-seeking and catching up in the strategic Ramsey model
(2008) Özer, Mehmet
This thesis analyzes the qualitative implications of the strategic interaction on the standard Ramsey model in terms of catching up. We have shown that the strategic interaction among agents in the economy leads the poor to be able to catch up with the rich, which is not the case for the standard Ramsey model where the initial wealth differences perpetuate. Secondly, within this framework, we incorporate the relative wealth effect and conclude that the catching up amoung agents depends on the share of two classes in the economy. If the share of two classes is same, there exist unique symetric steady state, whereas if the share of two classes are different the steady state is assymetric. Morever, the steady state level of aggregate capital stock is higher than the that of standard Ramsey model. Finally, we introduce the relative consumption effect and reach the conclusion that whatever the share of classes, the gap between the initial wealth level of two classes will disappear in the long run. In addition, the steady state level of aggregate wealth level is same with the that of standard Ramsey model.