Optimal inventory policies with postponed demand by price discounts
Fiyat indirimleri ile ertelenen taleple optimal stok politikaları
- Tez No: 587185
- Danışmanlar: Dr. PATRICK BEULLENS
- Tez Türü: Doktora
- Konular: Ekonomi, İşletme, Economics, Business Administration
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2018
- Dil: İngilizce
- Üniversite: Unıversıty Of Southampton
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
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Özet (Çeviri)
This thesis introduces a demand postponement policy in order to improve the performance of inventory management under batch ordering, advance demand information, capacitated/ uncapacitated and periodic/continuous review inventory systems. The main aim of this study is to nd integrated demand postponement and inventory policies. The structure of the thesis consists of ve main chapters which starts with an introduction in Chapter 1 which summarizes the main objectives of the study with a background information, followed by a Chapter 2 presenting an overview of the relevant literature and the methodology. Chapter 3 as the rst research paper, an inventory problem with stochastic demand and batch ordering and lost sales based on a real case is introduced and a demand postponement policy applied on this system to convert some of the lost sales to advance demand. A Markov Decision Process model is proposed and it is solved through Linear Programming (LP). The dual of the primal model is used to reduce the computational e ort and it is tested with several numerical data sets. The optimal inventory policy and discount policy for di erent batches are shown for managerial insights. In Chapter 4, the same problem without batch ordering is formulated by Markov Decision Process (MDP) solved by Backward induction algorithm. In addition, the demand pattern is changed to Advance Demand Information (ADI) which combines both stochastic and deterministic demand. The properties of optimal inventory and postponement policy parameters are analyzed and the numerical experiments are carried out under the uncapacitated and capacitated systems to show the impact of the postponement policy. The comparison of policy parameters with the literature shows that the demand postponement policy is highly e ective for the e cient use of capacity. In Chapter 5, the extension of the problem to a continuous review inventory system with distribution strategies is studied by an Net Present Value (NPV) approach. The e ectiveness of demand postponement under di erent nancial settings are examined and an extensive numerical experiments are presented. The thesis ends with a conclusion in Chapter 6 including the summary of the results, limitations of the study and further research directions. Keywords. Operational research, Supply Chain management, Logistic, Inventory management, Advance demand information, net present value, Periodic/continuous review inventory models, demand postponement, price discount
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