Lot scheduling with transfer batches in multi-stage shops

Çetinkaya, Ferda Can


Batch scheduling duling of incompatible jobs on a single reactor with dynamic arrivals
Korkmaz, Gediz; Kayalıgil, Sinan; Department of Industrial Engineering (2004)
In this study, a single machine batch-scheduling problem with incompatible jobs and dynamic arrivals is examined. The objective function is the minimization of the total flow time of the jobs. For solving problems a case specific branch and bound algorithm with a heuristic upper bound scheme and two alternative lower bound procedures is used. An extensive computational experiment is conducted to investigate the effects of certain parameters on the computation time. For the most difficult parameter combinati...
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Kart, Hasan Hüseyin; Tomak, Mehmet; Department of Physics (2004)
The solid, liquid, and solidification properties of Pd, Ag pure metals and especially PdxAg1-x alloys are studied by using the molecular dynamics simulation. The effects of temperature and concentration on the physical properties of PdxÞAg1-x are analyzed. Sutton-Chen (SC) and Quantum Sutton-Chen (Q-SC) many-body potentials are used as interatomic interactions which enable one to investigate the thermodynamic, static, and dynamical properties of transition metals. The simulation results such as cohesive ene...
Machine scheduling with preventive maintenances
Batun, Sakine; Azizoğlu, Meral; Department of Industrial Engineering (2006)
In manufacturing environments, machines are usually subject to down periods due to various reasons such as preventive maintenance activities, pre-accepted jobs and pre-known material shortages. Among these reasons, preventive maintenance, which is defined as the pre-planned maintenance activities to keep the machine in its operating state, has gained much more importance in recent years. In this thesis, we consider the single machine total flow time problem where the jobs are non-resumable and the machine i...
Evolutionary algorithms for deterministic and stochastic unconstrained function optimization
Koçkesen, Talip Kerem; Özdemirel, Nur Evin; Department of Industrial Engineering (2004)
Most classical unconstrained optimization methods require derivative information. Different methods have been proposed for problems where derivative information cannot be used. One class of these methods is heuristics including Evolutionary Algorithms (EAs). In this study, we propose EAs for unconstrained optimization under both deterministic and stochastic environments. We design a crossover operator that tries to lead the algorithm towards the global optimum even when the starting solutions are far from t...
Creep behavior determination and remaining life estimation for centrifugally cast tubes made of Nb-stabilised 25/35 Cr Ni iron-based superalloy
Orhaner, Feyyaz Önder; Tekin, Erdoğan; Department of Metallurgical and Materials Engineering (1996)
Citation Formats
F. C. Çetinkaya, “Lot scheduling with transfer batches in multi-stage shops,” Ph.D. - Doctoral Program, Middle East Technical University, 1996.