Yazar "Bektas, Tolga" seçeneğine göre listele

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    An empirical investigation of advanced manufacturing technology investment patterns: Evidence from a developing country
    (ELSEVIER, 2013) Bulbul, Hasan; Omurbek, Nuri; Paksoy, Turan; Bektas, Tolga
    Advanced manufacturing technology (AMT) investment patterns in developing countries is in need of further investigation, particularly in the light of the conflicting evidence from the literature. This paper provides new evidence on AMT investment patterns from the Turkish automotive industry and develops a taxonomy by exploring the relationships between AMT investment patterns, ownership structure, firm size and performance. Analysis of industry survey data suggests the existence of three groups with different AMT investment strategies. Results suggest that AMT investment patterns are not only significantly correlated with firm performance or ownership, but also reveals significant differences in manufacturing performance across investment patterns. (C) 2013 Elsevier B.V. All rights reserved.
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    Modeling and optimizing the integrated problem of closed-loop supply chain network design and disassembly line balancing
    (PERGAMON-ELSEVIER SCIENCE LTD, 2014) Ozceylan, Eren; Paksoy, Turan; Bektas, Tolga
    This paper describes an integrated model that jointly optimizes the strategic and tactical decisions of a closed-loop supply chain (CLSC). The strategic level decisions relate to the amounts of goods flowing on the forward and reverse chains. The tactical level decisions concern balancing disassembly lines in the reverse chain. The objective is to minimize costs of transportation, purchasing, refurbishing, and operating the disassembly workstations. A nonlinear mixed integer programming formulation is described for the problem. Numerical examples are presented using the proposed model. (C) 2013 Elsevier Ltd. All rights reserved.
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    Operational and environmental performance measures in a multi-product closed-loop supply chain
    (PERGAMON-ELSEVIER SCIENCE LTD, 2011) Paksoy, Turan; Bektas, Tolga; Ozceylan, Eren
    This paper investigates a number of operational and environmental performance measures, in particular those related to transportation operations, within a closed-loop supply chain. A mathematical model in the form of a linear programming formulation is used to model the problem, which captures the trade-offs between various costs, including those of emissions and of transporting commodities within the chain. Computational results are presented for a number of scenarios. using a realistic network instance. (C) 2010 Elsevier Ltd. All rights reserved.