Endüstri Mühendisliği Bölümü Koleksiyonu

Permanent URI for this collectionhttps://gcris.khas.edu.tr/handle/20.500.12469/48

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    Article
    Citation Count: 8
    Determining matchdays in sports league schedules to minimize rest differences
    (ELSEVIER, 2020) Çavdaroğlu, Burak; Atan, Tankut
    Many sports leagues first announce the games to be played in each round and then determine their matchdays as the season progresses. This study focuses on the fairness criterion of minimizing the total rest difference among opposing teams to find the matchdays for an announced schedule. We show that the problem is decomposable into optimizing the rounds separately. We also provide a polynomial-time exact algorithm for canonical schedules.
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    Article
    Citation Count: 4
    Managing Fuel Coal Supply Chains With Multiple Objectives and Multimode Transportation
    (AMER SOC ENGINEERING MANAGEMENT, 2013) Yücekaya, Ahmet; Yücekaya, Ahmet
    Power companies require sophisticated tools to manage fuel-coal supply chains which include multiple suppliers coal contracts and multimode transportation routes. In this article a multi-objective model which is integrated with multi-attribute decision-making for the selection of suppliers transportation routes and coal orders is developed. The model simultaneously optimizes multiple objectives such as minimizing purchase costs transportation costs and ash output and it also presents a decision framework on the selection of suppliers transportation routes and coal products that will achieve these objectives. The network and capacity constraints of suppliers and transportation routes are included in the model. The study utilizes multi-objective linear programming and well-known decision rules such as minimax maximin and compromise programming and Analytic Hierarchy Process is employed to determine preferred solutions. The methodology for the solution is illustrated via a case study and an alternative evaluation process is presented. The study demonstrates that the model can be used by power companies to find desired solutions as it provides an opportunity for the inclusion of the preferences of decision-makers and adjustments of the weights for each objective.