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Yazar "Ünal, Ali Tamer." için Fen Bilimleri Enstitüsü listeleme

Yazar "Ünal, Ali Tamer." için Fen Bilimleri Enstitüsü listeleme

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  • A decision support system for consumer driven supply networks 
    Ceviz, Ercan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, a decision support system is constructed to manage tactical and strategic level decision in a consumer driven supply networks. Decision making process includes many decision makers, multiple objectives, and ...
  • A formal model and a mathematical programming based analysis framework for tactical - level planning of home care systems 
    Güçlü, İlker. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Home care is a viable alternative to delivering health care services, especially for the elderly. Due to various operational characteristics, home care organizations are significantly different from the traditional ...
  • A heuristic to minimize total terdiness on parallel machines: an aggregate planning approach 
    Sansarcı, Engin. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Unrelated parallel machine total tardiness problem is investigated in this study. Job-splitting property, eligibility constraints and family setup structure are assumed. A previous study focused on the exact problem does ...
  • A hierarchical weight assignment model in hierarchical production planning 
    Pınarbaşı, Emine Gözde. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this study, a linear programming model is developed which integrates aggregate planning and scheduling systems in a hierarchical planning system of a tire manufacturer. In the hierarchical planning system, medium-term ...
  • A scheduling problem in copper wire industry 
    Zümbülcü, Noyan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    This thesis addresses the problem of scheduling jobs on two stage unrelated parallel machines with job sequence dependent setup times so as to minimize the defined objective function in copper-wire industry. The study of ...
  • An ontology for integrated planning and scheduling systems with hierarchies 
    Koyuncu, Osman Nihat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this study, an ontology is proposed for hierarchical detailed scheduling and planning systems. By using this ontology, planning and scheduling problems at different levels can be modeled. A complete system which considers ...
  • Analysis of rolling horizon method and end-of-horizon effects in aggregate planning systems 
    Dökük, Semiha. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    A computer model is built to simulate master production scheduling activities in uncapacitated single item single level production system under demand uncertainty in a rolling time horizon environment. The output from the ...
  • Analysis of the impact of decision time on the system performance in distributed systems 
    Özgün, Kamer. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    In this study, we investigate the e ect of the time it takes to generate a schedule on the performance of a stochastic dynamic scheduling system. To isolate the impact of the decision time on the system performance, we ...
  • Development of an object oriented mathematical modeling system 
    Atmaca, Tuğba. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    In this study, ICRON, which is a tool supporting object oriented mathematical programming, is partially developed in order to reduce the workload during the modeling and solving process of large scale optimization problems. ...
  • Due date assignment with family setups 
    Sertdemir, Sevilay. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    This study considers the single machine due date assignment problem involving dynamic arrivals and family setups. A rolling horizon approach following periodic rescheduling strategy is developed to quote due dates. At speci ...
  • Implementation of distributed workflow management systems 
    Çıtakoğlu, Hande. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this work, workflow management systems are investigated and a workflow engine which can be used in the competitive and dynamic business environment for managing distributed workflows is proposed. The currently used ...
  • Integrated production planning, shift planning and detailed scheduling in a tissue paper manufacturer 
    Teksan, Zehra Melis. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    The thesis is about the implementation of an integrated planning system in a large tissue paper manufacturer in Turkey. The manufacturer operates over four production facilities in di erent geographical locations where two ...
  • Lot - sizing and scheduling in flow shops 
    Güngör, Murat. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Lot-sizing is concerned with the product quantities, whereas scheduling considers the specific machines and product sequences. Lot-sizing and scheduling refers to pro cedures that aim to solve these interdependent problems ...
  • Modelling and analysis of agent based distributed scheduling systems 
    Kurşun, Mahmut. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this study we have introduced a mathematical foundation and a framework for the modeling and analysis of agent based distributed scheduling systems. We defined the basic structure of an object oriented agent based system, ...
  • Multi-level production planning for multi-location chemical company 
    Gökçe, Emre. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    We investigate the decision-making process at a chemical company which is a major soda manufacturer having three production facilities in different countries. The company is one of the top ten largest soda producers in the ...
  • New algorithms for the bin packing problem 
    Ünal, Ali Tamer. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1988., 1988.)
    Bin Packing is a well-known NP-complete problem which has many real-life applications. In this study, an extensive literature survey is followed by a number of new heuristic and optimal algorithms developed using a new ...
  • Object oriented design and implementation of a web based distributed simulation and control system 
    Kurşun, Mahmut. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2001., 2001.)
    In this study we have presented an object oriented design and implementation of a web based distributed simulation and control for real time systems. We have developed a system, which enables both controlling and simulating ...
  • Object-oriented design and implementation of distributed rule engines 
    İltir, Cenk. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this work, a new distributed rule engines paradigm based on object orientation is proposed and a tool partially implemented to support the new paradigm, ICRON, is introduced in order to address the modeling process of ...
  • Online due date assignment in dynamic and stochastic scheduling environments with family setups under tardiness and quoted lead time considerations 
    Düzgit, Zehra. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this study, due date assignment problem is addressed in a single machine dynamic and stochastic environment with family setups. A due date is to be assigned for each new job immediately at the time of its arrival. While ...
  • Paint shop scheduling in a bus plant :|re-entrant hybrid flow shop model with zero buffer and no-wait stations 
    Veysel, Ebru. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this study, an optimization model is constructed to propose the scheduling plan for a paint shop of a bus production plant. In bus production plant, the paint shop is located between the body shop and assembly line. ...