Dynamic scheduling problems consist of both challenging combinatorics, as found in classical scheduling problems, and stochastics due to uncertainty about the arrival times, resource requirements, and processing times of jobs. To address these two challenges, we investigate the integration of queueing theory and scheduling. The former reasons about long-run stochastic system characteristics, wh...

Scheduling problems for the sustainability of manufacturing firms in the era of the fourth industrial revolution is addressed in this research. In terms of open innovation, innovative production scheduling can be defined as scheduling using big data, cyber-physical systems, internet of things, cloud computing, mobile network, and so on. In this environment, one of the most important things is t...

Recent studies have demonstrated that the performance of a simulated annealing algorithm can be improved by following multiple search paths and parallel computation. In this paper, we use these strategies to solve a comprehensive mathematical model for a flexible flowshop lot streaming problem. In flexible flowshop environment, a number of jobs will be processed in several consecutive productio...

One of the greatest difficulties in working with combinatorial optimization is that the methods require specific procedures for each problem. Even general purpose methods, like Evolutionary Algorithms, require operators developed specifically for the problems. Suppose, for example, that someone has developed a code to solve Single Machine Scheduling problems. If such person decides to change an...

TWO-MACHINE FLOWSHOP SCHEDULING WITH FLEXIBLE OPERATIONS AND CONTROLLABLE PROCESSING TIMES Zeynep Uruk M.S. in Industrial Engineering Advisor: Prof. Dr. Selim Aktürk Co-Advisor: Asst. Prof. Dr. Hakan Gültekin August, 2011 In this study, we consider a two-machine flowshop scheduling problem with identical jobs. Each of these jobs has three operations, where the first operation must be performed ...

self-assembly of densely packed zno nanorods were grown on porous silicon (ps) substrate by low-temperature chemical bath deposition. the structural and optical properties of the obtained zno nanostructures on ps substrate were systematically studied. the strong and sharp (002) peak compared with other peaks in the x-ray diffraction (xrd) indicated thatzno nanorods formed with superior orientat...

This paper focuses on the flowshop scheduling problem with sequence dependent setup times (FSSP-SDST), which has been an investigated object for decades as one of the most popular scheduling problems in manufacturing systems. A novel hybrid local search algorithm called HLS is presented to solve the flowshop scheduling problem with sequence dependent setup times with the criterion of minimizing...

Usually, scheduling of maintenance operations and production sequencing are dealt with separately in the literature and, therefore, also in the industry. Given that maintenance affects available production time and elapsed production time affects the probability of machine failure, this interdependency seems to be overlooked in the literature. This paper presents a comparative study on joint pr...