نتایج جستجو برای: echelon inventory

تعداد نتایج: 54617  

Journal: :Sustainability 2022

Firms with omni-channel multi-echelon distribution networks (OMDC) integrate all of their sale channels and echelons to achieve an effective matching multi-type orders a shared inventory. However, the high operational cost caused by insufficient use inventory resources unreasonable order allocation restricts sustainable development firms. To this end, joint decisions optimization (IO) (OA) are ...

Journal: :Computers & OR 2003
Kefeng Xu Philip T. Evers

This paper examines the assertion that partial pooling of customers is sometimes favored over complete pooling on the sole basis of demand correlation. First, the management of inventory within a supply chain is discussed, with speci2c attention paid to risk-pooling. Then, the claim that partial pooling can dominate is theoretically discussed. The conditions under which previous research found ...

2014
Francesco Costantino Giulio Di Gravio Ahmed Shaban Massimo Tronci

Inventory control policies have been recognized as a contributory factor to the bullwhip effect and inventory instability. Previous studies have indicated that there is a trade-off between bullwhip effect and inventory performance where the bullwhip effect reduction might increase inventory instability. Therefore, there is a need for inventory control policies that can cope with supply chain dy...

In this paper, the cost function for a three-echelon inventory system with two warehouses is derived. Transportation times are constant and retailers face independent Poisson demand. Replenishments are one-for-one. The lead time of a retailer is determined not only by the constant transportation time but also by the random delay incurred due to the availability of stock at the warehouses. We co...

Journal: :JORS 2011
Yaman Barlas Baris Gunduz

Supply chain inventories are prone to fluctuations and instability. Known as the bullwhip effect, small variations in the end item demand create oscillations that amplify throughout the chain. By using system dynamics simulation, we investigate some of the structural sources of the bullwhip effect, and explore the effectiveness of information sharing to eliminate the undesirable fluctuations. E...

Journal: :European Journal of Operational Research 1999
Matthieu van der Heijden

We consider inventory control in a two-echelon divergent network, consisting of a central depot and multiple (non-identical) local warehouses. Past research has shown that (R, S) order-up-to control rules for this system type can easily be obtained using a decomposition approach, where the derivation of the order-up-to level S is separated from the derivation of the rationing parameters. We sho...

Journal: :Rel. Eng. & Sys. Safety 2013
Francesco Costantino Giulio Di Gravio Massimo Tronci

Multi-echelon, multi-indenture spare parts inventory control subject to system availability and budget constraints, Reliability Engineering and System Safety, This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of ...

2015
Sven Axsäter

This paper considers a single-echelon, continuous review, inventory system with a warehouse facing compound Poisson customer demand. The replenishment lead-time is constant. Demand that cannot be met directly is backordered. There are standard linear holding and backorder costs but no set-up or ordering cost. It is assumed that the demand process starts at a certain given time. Consequently, be...

Journal: :Interfaces 2010
Alper Sen Deepak Bhatia Koray Dogan

Applied Materials, Inc. is the global leader in nanomanufacturing technology solutions, with a broad portfolio of innovative equipment, service and software products. The company supports its customers worldwide with an extensive service and parts network of over 100 locations. At the end of 2006, the company decided to evaluate and rationalize its network design in North America. A detailed op...

2010
Engin Topan Z. Pelin Bayindir Tarkan Tan

We consider a multi-item two-echelon inventory system in which the central warehouse operates under a (Q,R) policy, and each local warehouse implements (S − 1, S) policy. The objective is to find the policy parameters minimizing expected system-wide inventory holding and fixed ordering costs subject to an aggregate mean response time constraint at each facility. We propose a Lagrangian heuristi...

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