MUSTAFA ÇİMEN, SEDAT BELBAĞ, MEHMET SOYSAL

Üretimde Esneklik ve Stok Yönetimi: Stok Optimizasyonu İçin Bir Karar Destek Modeli

İşletme içerisinde daha esnek yapılar kurmak, değişimle daha kolay başa çıkabilmek için önemli bir araçtır. Süreç esnekliği, üretim tesislerinin ya da işçilerin birden fazla ürünü üretebilmesini ve bir ürünün üretiminden bir başka ürünün üretimine hızlı ve maliyetsiz şekilde geçebilmesini hedefler. Bu çalışmada süreç esnekliği problemi için stok maliyetlerini minimize eden üretim kararlarını bulacak bir Doğrusal Programlama modeli önerilmektedir. Çalışmada elde edilen sonuçlar, süreç esnekliği içeren sistemlerin stok maliyetleri açısından esnek olmayan sistemlerden daha üstün olduğunu ve kısmî esneklik içeren sistemlerin neredeyse tam esnek sistemler kadar verimli olabileceğini göstermektedir.

Production Flexibility and Inventory Management: A Decision Support Model For Inventory Optimization

Building flexible structures within a company is an important tool for coping with changes. Process flexibility targets production facilities or workers to easily change their productions from a product to another without significant changeover costs. This study presents a Linear Programming Model for a production system with inventory costs and several process flexibility options. The model has been used to compare alternative process flexibility designs in terms of inventory costs. The experimental results demonstrate that (i) systems with process flexibility outperforms dedicated systems and (ii) limited flexibility designs may perform almost as efficient as full flexibility designs.

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Akşin, O. Z., & Karaesmen, F. (2007). "Characterizing the performance of process flexibility structures", Operations Research Letters, 35(4), 477-484.
Albino, V., Garavelli, A. C. (1999), "Limited Flexibility in Cellular Manufacturing Systems: A Simulation Study", International Journal of Production Economics, 60-61, 447-455.
Andreou, S. A. (1990), "A Capital Budgeting Model for Product-Mix Flexibility", Manufacturing and Operations Management, 3 (1), 5-23.
Athey, S., & Schmutzler, A. (1995). "Product and process flexibility in an innovative environment". The Rand Journal of Economics, 557-574.
Browne, J., Dubois, D., Rathmill, K., Sethi, S. P., Stecke, K. E. (1984), "Classification of Flexible Manufacturing Systems", The FMS magazine, 2(2), 114-117.
Chou, M. C., Teo, C. P., Zheng, H. (2008), "Process Flexibility: Design, Evaluation, and Applications", Flexible Services and Manufacturing Journal, 20, 59-94.
Chou, M. C., Chua, G. A., Teo, C.-P. (2010), "On range and response: Dimensions of Process Flexibility", European Journal of Operational Research, 207(2), 711- 724.
De Toni, A., Tonchia S. (1998), "Manufacturing Flexibility: A Literature Review." International Journal of Production Research, 36(6), 1587-1617.
Fine, C. H., Freund, R. M. (1990), "Optimal Investment in Product-Flexible Manufacturing Capacity", Management Science, 36 (4), 449-466.
Francas, D., Kremer, M., Minner, S., Friese, M. (2009), "Strategic Process Flexibility Under Lifecycle Demand", International Journal of Production Economics, 121, 427-440.
Francas, D., Lohndorf N., Munner S. (2011), "Machine and Labor Flexibility in Manufacturing Networks." International Journal of Production Economics, 131, 165-174.
Garavelli, A. C. (2001), "Performance Analysis of a Batch Production System with Limited Flexibility", International Journal of Production Economics, 69, 39- 48.
Graves, S. C., & Tomlin, B. T. (2003). "Process flexibility in supply chains", Management Science, 49(7), 907-919.
Gustavson, Sten-Olof (1984), "Flexibility and Productivity in Complex Production Processes", International Journal of Production Research, 22(5), 801-808.
He, P., Xu, X., Hua, Z. (2012), "A New Method For Guiding Process Flexibility Investment: Flexibility Fit Index", International Journal of Production Research, 50(14), 3718-3737.
Jaikumar, R. (1984), "Flexible Manufacturing Systems: A Managerial Perspective", Harvard Business School, (Boston, MA).
Jain, A., Jain, P. K., Chan, F. T. S:, Singh, S. (2013), "A Review on Manufacturing Flexibility", International Journal of Production Research, 51(19), 5946- 5970.
Jordan, W. C., Graves, S. C. (1995), "Principles on the Benefits of Manufacturing Process Flexibility", Management Sciences, 41(4), 577- 594.
Mandelbanm, M., Buzacott, J. (1986), "Flexibility and Its Use: A Formal Decision Process and Manufacturing View", Stecke, K. E. & Suri, R (der.) Proceedings of the Second ORSA/TIMS Conference on FMS (Ann Arbor, MI), Elsevier, Amsterdam, 119-130.
Rogers, P. P., Ojha, D., White R. E. (2011), "Conceptualizing Complementarities in Manufacturing Flexibility: A Compressive View." International Journal of Production Research 49(12), 3767-3793.
Sethi, A. K., Sethi, S. P. (1990), "Flexibility in Manufacturing: A Survey", The International Journal of Flexible Manufacturing Systems, 2, 289-328.
Upton, D. M. (1995), "Flexibility as process mobility: The Management of Plant Capabilities for Quick Response Manufacturing", Journal of Operations Management, 12, 205-224.
Van Biesebroeck, J. V. (2007), "Complementarities in Automobile Production", Journal of Applied Econometrics, 22, 1315-1345.
Yu, D. Z., Tang, S. Y., Niederhoff, J. (2011), "On The Benefits of Operational Flexibility in a Distribution Network with Transshipment", Omega, 39, 350- 361.