Now showing items 1-10 of 65

    • Team planning under an electricity failure for a GSM operator 

      Üney-Yüksektepe, Fadime; Çakır, Kübra; Yılmaz, Nur; Bayrak, Meltem (2019)
      Base stations are very important for all GSM operators. Efficient base stations prevent income loss while bringing prestige to the company. This study deals with the problem of transportation planning of portable generators ...
    • A novel fuzzy TOPSIS method using emerging interval-valued spherical fuzzy sets 

      Kutlu Gündoğdu, Fatma; Kahraman, Cengiz (2019-06-03)
      All the extensions of ordinary fuzzy sets with three-dimensional membership functions such as intuitionistic fuzzy sets, second type intuitionistic fuzzy sets (or Pythagorean fuzzy sets) and neutrosophic sets aim at defining ...
    • The r-interdiction selective multi-depot vehicle routing problem 

      Sadati, Mir Ehsan Hesam; Aksen, Deniz; Aras, Necati (WILEY, 111 RIVER ST, HOBOKEN 07030-5774, NJ USA, 2020)
      The protection of critical facilities has been attracting increasing attention in the past two decades. Critical facilities involve physical assets such as bridges, railways, power plants, hospitals, and transportation ...
    • Extension of WASPAS with spherical fuzzy sets 

      Gündoğdu, Fatma Kutlu; Kahraman, Cengiz (2019)
      The 3D extensions of ordinary fuzzy sets such as intuitionistic fuzzy sets (IFS), Pythagorean fuzzy sets (PFS), and neutrosophic sets (NS) aim to describe experts’ judgments more informatively and explicitly. In this paper, ...
    • Spherical fuzzy sets and spherical fuzzy TOPSIS method 

      Kutlu Gündoğdu, Fatma; Cengiz, Kahraman (Journal of Intelligent Fuzzy Systems, 2019)
      All the extensions of ordinary fuzzy sets with three dimensional membership functions such as intuitionistic fuzzy sets (IFS), intuitionistic fuzzy sets of second type (IFS2), and neutrosophic fuzzy sets (NFS) aim at ...
    • An Analytical Approach to Automotive Industry 

      Ülkü, İlayda; Bulkan, Serol; Yüksektepe, Fadime (2015)
      Inventory control helps to manage or locate materials and any information through the processes in the company. The aim of the inventory management in the companies is to optimize inventory control. Especially, for the ...
    • Wind Farm Layout Optimization to Maximize Total Power Production 

      Ülkü, İlayda; Alabaş Uslu, Çiğdem (E3S Web of Conferences, 2018)
      With the rapid increase in energy demand, renewable energy has been considered as an alternative energy resource around the world. A new nonlinear mathematical model is developed in the presented study and a comparison ...
    • A new mathematicalpProgramming aapproach to wind farm layout problem under multiple wake effects 

      Ülkü, İlayda; Alabaş Uslu, Çiğdem (2019)
      Wind farm layout optimization is one of the challenging problems in thefield of renewable energy. In thepresent study, a new nonlinear mathematical model for layout of wind turbines under multiple wakeeffects is proposed ...
    • A mathematical model for the delivery routing problem via drones 

      Han, Sinem; Özer, Begüm; Alioğlu, Barış; Polat, Özgür; Aktin, Ayşe Tülin (Pamukkale Üniversitesi, 2019)
      Logistics sector aims to distribute merchandise to designated places on time, while focusing on the entire process that starts from storing the goods at warehouses. Transportation by land is the most common and preferred ...