Now showing items 1-20 of 20

    • An analysis of heuristics in a dynamic job shop with weighted tardiness objectives 

      Kutanoglu, E.; Sabuncuoğlu, İ. (Taylor & Francis, 1999)
      Meeting due dates as a reflection of customer satisfaction is one of the scheduling criteria that is frequently encountered in today's manufacturing environments. The natural quantification of this qualitative goal involves ...
    • Analysis of order review/release problems in production systems 

      Sabuncuoglu I.; Karapinar H.Y. (Elsevier Science B.V., Amsterdam, Netherlands, 1999)
      Order Review/Release (ORR) activities have mostly been ignored in past job shop research. In most previous studies, arriving jobs are immediately released to the shop floor without considering any information about the ...
    • Assembly line balancing using genetic algorithms 

      Sabuncuoğlu İ.; Erel, E.; Tanyer, M. (Kluwer Academic Publishers, 2000)
      Assembly Line Balancing (ALB) is one of the important problems of production/operations management area. As small improvements in the performance of the system can lead to significant monetary consequences, it is of utmost ...
    • A beam search algorithm to optimize robustness under random machine breakdowns and processing time variability 

      Goren, S.; Sabuncuoglu I. (2007)
      The vast majority of the machine scheduling research assumes complete information about the scheduling problem and a static environment in which scheduling systems operate. In practice, however, scheduling systems are ...
    • Beam search based algorithm for scheduling machines and AGVs in an FMS 

      Karabük, S.; Sabuncuoğlu, İ. (Publ by IIE, Norcross, GA, United States, 1993)
      This paper presents a beam search based scheduling algorithm for a random FMS. The proposed algorithm considers finite buffer capacity, routing and sequence flexibilities and generates machine and AGV schedules in varying ...
    • A beam search-based algorithm and evaluation of scheduling approaches for fexible manufacturing systems 

      Sabuncuoglu İ.; Karabuk, S. (Taylor & Francis, 1998)
      This paper presents a new algorithm for the flexible manufacturing system (FMS) scheduling problem. The proposed algorithm is a heuristic based on filtered beam search. It considers finite buffer capacity, routing and ...
    • Binary integer formulation for mixed-model assembly line balancing problem 

      Gökçen, H.; Erel, E. (Pergamon Press, 1998-04-01)
      The assembly line balancing problem has been a focus of interest to the academicians of production/operations management for the last 40 years. Although there are numerous studies published on the various aspects of the ...
    • Concurrent consideration of product design, process planning and production planning activities 

      Adil G.K. (1998)
      In manufacturing engineering, product design, process planning and production planning activities are often considered independently. However, in order to effectively respond to changes in business situations, such as ...
    • Effect of discrete batch WIP transfer on the efficiency of production lines 

      Erel, E. (Taylor & Francis, 1993)
      In this paper, the effect of discrete batch transfer of WIP between workstations on the efficiency of asynchronous production lines is analysed via a simulation model. The processing times are assumed to be random variables ...
    • An evaluative study of operation grouping policies in an FMS 

      Sabuncuoǧlu, İ.; Lahmar, M. (Kluwer Academic Publishers, 2003)
      The increased use of flexible manufacturing systems to provide customers with diversified products efficiently has created a significant set of operational challenges for managers. This technology poses a number of decision ...
    • A goal programming approach to mixed-model assembly line balancing problem 

      Gokcen, H.; Erel, E. (Elsevier, 1997)
      In this paper, a binary goal programming model for the mixed-model assembly line balancing (ALB) problem is developed. The model is based on the concepts developed by Patterson and Albracht [1] and the model of Deckro and ...
    • An Input/Output control system for the dynamic job shop 

      Onur, L.; Fabrycky, W. J. (Taylor & Francis, 1987)
      A combined input/output control system is presented for periodically determining the set of jobs to be released (input variables) and the capacities of processing centers (output variables) in the dynamic job shop, so that ...
    • Joint lot sizing and tool management in a CNC environment 

      Aktuük, M. S.; Önen, S. (Elsevier, 1999)
      We propose a new algorithm to solve lot sizing, tool allocation and machining conditions optimization problems simultaneously to minimize total production cost in a CNC environment. Most of the existing lot sizing and tool ...
    • Match-up scheduling under a machine breakdown 

      Aktürk, M. S.; Görgülü, E. (Elsevier, 1999)
      When a machine breakdown forces a modified flow shop (MFS) out of the prescribed state, the proposed strategy reschedules part of the initial schedule to match up with the preschedule at some point. The objective is to ...
    • A multi-family dynamic lot sizing problem with coordinated replenishments: a heuristic procedure 

      Mercan, H. M.; Erenguc, S. S. (Taylor & Francis, 1993)
      Consider a manufacturing environment where multiple items are produced. These products are grouped into families due to their similarities in design and manufacturing. It pays off to coordinate the manufacture of products ...
    • A note on the within-cell layout problem based on operation sequences 

      Aktürk, M. S. (Taylor & Francis, 1996)
      The existing studies in the literature usually ignore the within-cell layout problem while forming part families and manufacturing cells. A new approach is proposed to solve the part-family and machine-cell formation problem ...
    • Part-machine grouping using a multi-objective cluster analysis 

      Akturk, M.S.; Balkose H.O. (1996)
      In the existing literature, the part-family formation problem is handled either by the coding systems or the cluster analysis. In this study, we propose a new method that will consider both design and manufacturing attributes ...
    • Pure cycles in flexible robotic cells 

      Gultekin, H.; Karasan O. E.; Akturk, M. S. (Elsevier, 2009)
      In this study, an m-machine flexible robotic manufacturing cell consisting of CNC machines is considered. The flexibility of the machines leads to a new class of robot move cycles called the pure cycles. We first model the ...
    • Scheduling in a three-machine flexible robotic cell 

      Gultekin H.; Akturk, M.S.; Karasan O.E. (2006)
      In this study, a three-machine flexible robotic manufacturing cell in which the CNC machines are used is considered. These machines are highly flexible and are capable of performing several different operations. Each machine ...
    • Tool allocation and machining conditions optimization for CNC machines 

      Aktürk, M. S.; Avcı, S. (Elsevier, 1996)
      In the literature, there exist many variations of machining economics problem in terms of modelling approaches and solution methodologies. However most of the existing studies focus on the single machining operation which ...