Browsing by Author "Ekici, Ali"
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Stochastic production planning with flexible manufacturing systems and uncertain demand: A column generation-based approach
Elyasi, Milad; Özener, Başak Altan; Ekici, Ali; Özener, Okan Örsan; Yanıkoğlu, İhsan (Elsevier, 2022)The ongoing pandemic, namely COVID-19, has rendered widespread economic disorder. The deficiencies have delayed production at manufacturers in several industries on the supply side. The effects of disruption were more ... -
Supplier selection and order allocation in the presence of suppliers with exact annual capacity
Ekici, Ali; Özener, Okan Örsan; Elyasi, Milad (Inderscience Enterprises Ltd., 2021)In this paper, we focus on the supplier selection and order quantity allocation for a single retailer. The retailer orders a product from multiple suppliers with capacities, adds value to the product and fulfils the demand ... -
A syncronized routing problem for restoring inter-dependent infrastructure networks
Sevindik, Büşra (2018-05)Disasters may cause significant damages in lifeline infrastructure systems (such as gas, power, water) and lead to long-lasting failures. It is important to repair the damaged components and restore the affected infrastructures ... -
Transportation planning for the relief items distribution during an emergency
Çankaya, Emre (2017-01)We study the inventory slack routing problem (ISRP) to improve planning of distribution of the relief supplies, which is a critical issue in emergency preparedness and response. The authority officials construct their ... -
A two-phase heuristic algorithm for the label printing problem
Çankaya, Emre; Ekici, Ali; Özener, Okan Örsan (Springer, 2023-04)In this paper, we study the label printing problem (LPP) which has applications in the printing industry. In LPP, the demand for a set of labels is satisfied by printing the labels using templates with multiple slots. Given ... -
A variable neighborhood search based matheuristic for a waste cooking oil collection network design problem
Ölmez, Ömer Berk; Gültekin, Ceren; Koyuncu, Burcu Balçık; Ekici, Ali; Özener, Okan Örsan (Elsevier, 2022-10)Households produce large amounts of waste cooking oil (WCO), which should be disposed properly to avoid its negative impacts on the environment. Using WCO as raw material in biodiesel production is an effective disposal ... -
Variable-sized bin packing problem with conflicts and item fragmentation
Ekici, Ali (Elsevier, 2022-01)In this paper, we study the Variable-Sized Bin Packing Problem with Conflicts and Item Fragmentation (VSBPPC-IF) that has applications such as (i) the delivery planning of incompatible items using a fleet of heterogenous ...
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