Now showing items 1-6 of 6

    • Lot sizing with nonlinear production cost functions 

      Koca, Esra (Bilkent University, 2015-07)
      In this study, we consider di erent variations of the lot sizing problem encountered in many real life production, procurement and transportation systems. First, we consider the deterministic lot sizing problem with ...
    • Multimodal multicommodity routing problem with scheduled services 

      Ayar, Burak (Bilkent University, 2008)
      We study a multicommodity network flow problem faced by a third party logistics company that has the possibility of using ground and maritime transportation. We are given a set of commodities which should be picked up ...
    • Nonlinear mixed integer programming models and algorithms for fair and efficient large scale evacuation planning 

      Bayram, Vedat (Bilkent University, 2015-07)
      Shelters are safe facilities that protect a population from possible damaging effects of a disaster. Traffic management during an evacuation and the decision of where to locate the shelters are of critical importance to ...
    • Stochastic lot sizing problems under monopoly 

      Yanıkoğlu, İhsan (Bilkent University, 2009)
      In this thesis, we study stochastic lot sizing problems under monopoly. We consider production planning of a single item using uncapacitated resources over a multi-period time horizon. The demand uncertainty is modeled ...
    • Valid inequalities for the problem of optimizing a nonseparable piecewise linear function on 0-1 variables 

      Aksüt, Ziyaattin Hüsrev (Bilkent University, 2011)
      In many procurement and transportation applications, the unit prices depend on the amount purchased or transported. This results in piecewise linear cost functions. Our aim is to study the structure that arises due to a ...
    • Vendor location problem 

      Çınar, Yüce (Bilkent University, 2009)
      In this study, we aim to design a distribution system with the following components: the location of vendors, the number of vendors, the service region of the vendors, the number of vehicles and workers, and the assignment ...