Person: Kasimoğlu, Fatih
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Dr. Öğr. Üyesi
Last Name
Kasimoğlu
First Name
Fatih
Name
Fatih KASIMOĞLU
4 results
Search Results
Now showing 1 - 4 of 4
Publication Improving Bottlenecks: An Automotive Company Application(European Journal of Science and Technology, 2022-04-16) Gizem SUBAŞI; Utku, Durdu Hakan; Kasimoğlu, FatihPublication An Inventory Optimization Model for a Textile Manufacturing Company(Ankara Yildirim Beyazit Universitesi, 2022-12-31) Adem PINAR; Utku, Durdu Hakan; Kasimoğlu, FatihInventory management is a crucial issue in most businesses from factories in industry to small and large organizations in the production or service sector. A company should determine an optimum inventory level between excessive inventory that takes up physical space, costs much, and lack of inventory which disrupts the supply chain causing unavailability of the product that makes customers change their idea and buy from another supplier. In this study, we first classify the items that the company manufactures by using ABC analysis and develop a mathematical model to minimize total cost to enable a better inventory management. We use ABC analysis method to evaluate products in a textile company in terms of importance and to track these products according to their priorities. Accordingly, we propose a mixed integer programming model to determine production quantities and inventory levels with minimum cost. The results shows that the company in concern can improve its total production and inventory costs by 3.8 percent.Publication Project management in a competitive environment: interdicting a CPM based project and its implications(EDP Sciences, 2021) İbrahim Akgün; Kasimoğlu, FatihThere are two opponents in a classic network interdiction problem, network owner/defender and interdictor/attacker. Each side has enough information about the other’s possible courses of action. While the network user wishes to run the network in an optimal way, the attacker with the limited resources tries to prevent the optimal operation of the network by interdicting the arcs/nodes of the network. In this study, we investigate project management in a competitive environment using a network interdiction approach. We assume that the project owner/manager strives to minimize the completion time of a Critical Path Method (CPM) based project while an opponent attempts to maximize the minimum completion time by inflicting some delays on project activities with available interdiction resources. Considering both discrete and continuous delay times, we develop two bi-level mixed-integer programming models for the interdictor. Using duality, we then convert the bi-level models to standard single-level models, which are solvable through standard optimization packages. We extend these models to find efficient solutions in terms of project completion time and interdiction resources from the interdictor’s perspective. In this respect, we develop an algorithm to find an efficient solution set for the interdictor. Next, from project manager’s standpoint, we discuss the earliest and latest scheduling times of activities in case of interdiction. Finally, we apply the developed techniques in a marketing project aiming at introducing a new product. The findings may enhance a better project management in an environment where an opponent can adversely affect the project management process by delaying some activities.Publication Analyzing the Vulnerabilities in a Transshipment Network: A Bilevel Programming Approach(Institute of Electrical and Electronics Engineers (IEEE), 2023) Bayeğ, Selami; Utku, Durdu Hakan; Kasimoğlu, Fatih