Now showing items 1-15 of 15

    • A Combined Fuzzy AHP-goal Programming Approach to Assembly-Line Selection 

      Ayağ, Zeki; Özdemir, Rifat Gürcan (IOS PRESS, NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS, 2007)
      In mass production, assembly-line balancing (ALB) problem has been a critical and repetitive issue for companies for long time. On the other hand, equipment selection for stations has also been another important problem ...
    • A Cutting Sequencing Approach to Modular Manufacturing 

      Aktin, Ayşe Tülin; Özdemir, Rifat Gürcan (Emerald Group Publishing Limited, 2004)
      In this study, a two‐stage algorithm is developed for the cutting sequencing problem in a modular manufacturing system consisting of four basic workstations. Since the flexibility of the system is dependent upon the cutting ...
    • A fuzzy AHP approach to evaluating machine tool alternatives 

      Ayağ, Zeki; Özdemir, Rifat Gürcan (SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS, 2006-04)
      Selecting process of a machine tool has been very important issue for companies for years, because the improper selection of a machine tool might cause of many problems affecting negatively on productivity, precision, ...
    • A Hybrid Approach for Fuzzy Clustering and Assembly Line Balancing Problems 

      Tarhan, İbrahim Ethem; Demiere, Murat; Yahya, Mehmet; Fakı, Filiz; Özdemir, Rifat Gürcan (2013)
    • A Hybrid Approach To Concept Selection Through Fuzzy Analytic Network Process 

      Ayağ, Zeki; Özdemir, Rifat Gürcan (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2009-02)
      Evaluating conceptual design alternatives in a new product development (NPD) environment has been one of the most critical issues for many companies which try to survive in the fast-growing world markets. Therefore, most ...
    • An analytic network process-based approach to concept evaluation in a new product development environment 

      Özdemir, Rifat Gürcan; Ayağ, Zeki (TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND, 2007-06)
      Selecting the best product concept is one of the most critical tasks in a new product development (NPD) environment. Making decisions at this stage becomes very difficult due to imprecise and uncertain product requirements. ...
    • An Integrated Approach To Evaluating Assembly-Line Design Alternatives With Equipment Selection 

      Özdemir, Rifat Gürcan; Ayağ, Zeki (Taylor & Francis Ltd, 4 Park Square, Milton Park, Abingdon Ox14 4Rn, Oxon, England, 2011)
      The design and implementation of assembly-line systems have been critical issues for companies since the first assembly-line was started at the Ford Highland Plant in 1913. From that time onwards, most companies have met ...
    • An integrated approach to the one-dimensional cutting stock problem in coronary stent manufacturing 

      Özdemir, Rifat Gürcan; Aktin, Ayşe Tülin (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2009-07-16)
      This paper presents a two-stage approach for pattern generation and cutting plan determination of the one-dimensional cutting stock problem. Calculation of the total number of patterns that will be cut and generation of ...
    • An intelligent approach to ERP software selection through fuzzy ANP 

      Özdemir, Rifat Gürcan; Ayağ, Zeki (TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND, 2007)
      During the implementations of enterprise resource planning (ERP) systems, most companies have experienced some problems, one of which is how to determine the best ERP software satisfying their needs and expectations. Because ...
    • An Intelligent Approach To Machine Tool Selection Through Fuzzy Analytic Network Process 

      Ayağ, Zeki; Özdemir, Rifat Gürcan (Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands, 2011-04)
      In this study, we utilize analytic network process (ANP), a more general form of AHP, for justifying stand-alone machine tools out of available alternatives in market due to the fact that AHP cannot accommodate the variety ...
    • Evaluating Machine Tool Alternatives Through Modified TOPSIS And Alpha-Cut Based Fuzzy ANP 

      Ayağ, Zeki; Özdemir, Rifat Gürcan (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2012-12)
      The problem of machine tool selection among available alternatives has been critical issue for most companies in fast-growing markets for a long time. In the presence of many alternatives and selection criteria, the problem ...
    • Mixed Model Assembly Line Balancing With Sub-Assembly Selection in Automotive Industry 

      Özdemir, Rifat Gürcan; Kula, Ufuk (World Scientific Publ Co Pte Ltd, Po Box 128 Farrer Rd, Singapore 9128, Singapore, 2012)
      In this study, mixed model assembly line balancing and sub-assembly selection problems are solved jointly. The mixed model assembly line balancing problem requires that tasks are assigned to workstations with balanced ...
    • Multi Objective New Product Development In Bakery Production Under Fuzzy Demand Parameters 

      Özdemir, Rifat Gürcan; Çiçek, Burçin; Özenç, Derya (Ios Press, Nieuwe Hemweg 6B, 1013 Bg Amsterdam, Netherlands, 2010)
      This paper deals with the problem of multi objective new product development and its solution with an intelligent approach. The proposed approach uses fuzzy parameters for economic analysis and combines a multi-criteria ...
    • Synchronized Two-Stage Lot Sizing and Scheduling Problem in Automotive Industry 

      Özdemir, Rifat Gürcan; Yüksektepe, Fadime (Springer-Verlag Berlin, Heidelberger Platz 3, D-14197 Berlin, GermanySpringer-Verlag Berlin, Heidelberger Platz 3, D-14197 Berlin, Germany, 2012)
      This study proposes a mixed-integer linear programming model to solve the synchronized two-stage lot sizing and scheduling problem with setup times and costs. The main motivation behind this study is based on the need of ...
    • The Modified Fuzzy Art and a Two-Stage Clustering Approach to Cell Design 

      Özdemir, Rifat Gürcan; Gençyılmaz, Güneş; Aktin, Ayşe Tülin (ELSEVIER SCIENCE INC, 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA, 2007-12-01)
      This study presents a new pattern recognition neural network for clustering problems, and illustrates its use for machine cell design in group technology. The proposed algorithm involves modifications of the learning ...