نتایج جستجو برای: echelon

تعداد نتایج: 1969  

1997
Holger Bartel

Cointegrated VARMA models can be parameterized by using the echelon form, which is characterized by the Kronecker indices. Three diierent methods for estimating the Kronecker indices of cointegrated echelon form VARMA models are discussed and compared. They have the common feature of estimating the individual equations of the system separately and using order selection criteria. The small sampl...

2005
Mohammad H. Al-Rifai Manuel D. Rossetti Vikram L. Desai

Large multi-echelon inventory systems usually consist of hundreds of thousands of stock keep units (SKU). Calculating inventory policies for each product is a computational burden that necessitates the need for more efficient policy setting techniques that reduce computational time and increases managerial convenience. The main objective of our research is to investigate the effect of segmentat...

2004
Manuel Rossetti

This paper explores the application of constrained clustering algorithms to inventory grouping based problems. Our research in this area is based upon a segmentation methodology that considers operationally relevant part attributes. In this paper, we present a brief review of literature on multi-echelon inventory models, and clustering applications to inventory segmentation. Finally, we discuss...

Journal: :Journal of the Royal Army Medical Corps 1994
V Sarić V Atias-Nikolov T Kovac E Franković V Mrsić J Lukac

NATO war medical doctrine was applied in the war in Croatia, Bosnia and Herzegovina. However, due to rather specific martial and organizational circumstances, the doctrine had to be modified. sometimes substantially. A medical team from the war hospital in Livno, Bosnia and Herzegovina describes their work with respect to the four-echelon NATO doctrine. The team covered a relatively large and a...

Journal: :IJAPUC 2013
Zhi Chen Chao Ren Ren-long Zhang Mi-Yuan Shan

Joint managed inventory is an advanced supply chain inventory management tool, which will effectively tackle the complicated problem between the inventory cost of supply chain and service level. The research on inventory model and its’ control under JMI environment is a hot issue at present. In this paper, the authors deeply discuss the question of the inventory time costs about the multi-produ...

Journal: :Oper. Res. Lett. 2007
Boray Huang Seyed M. R. Iravani

This paper considers a two-echelon capacitated supply chain with two non-identical retailers and information sharing. We characterize the optimal inventory policies. We also study the benefits of the optimal stock rationing policy over the first come first served (FCFS) and the modified echelon-stock rationing (MESR) policies. © 2006 Elsevier B.V. All rights reserved.

Journal: :European Journal of Operational Research 2023

• Two-echelon vehicle routing problem with three important real-world extensions. Simultaneous handling of reverse flows, satellite capacities, and timing aspects. Matheuristic solution approach combines different decomposition strategies. New for efficient feasibility testing local-search moves. Last-mile collection delivery services often rely on multi-echelon logistic systems many types prac...

Journal: :CoRR 2017
Afshin Oroojlooyjadid Lawrence V. Snyder Martin Takác

In multi-echelon inventory systems the performance of a given node is affected by events that occur at many other nodes and in many other time periods. For example, a supply disruption upstream will have an effect on downstream, customer-facing nodes several periods later as the disruption "cascades" through the system. There is very little research on stock-out prediction in single-echelon sys...

2009
Hitesh Gupta Yossi Sheffi

With the increasing complexities in supply chains and increasing global trade, integrated supply chain network design is utilized by the firms in order to reduce the overall cost while meeting the customer demand with requisite levels of service. This view of collaborative approach towards supply chain design has the potential of providing competitive edge for the firms in a highly competitive ...

2011
Jesus Gonzalez-Feliu

Multi-echelon distribution schemes are one of the most common strategies adopted by the transport companies in an aim of cost reduction, but their identification in scientific literature is not always easy due to a lack of unification. This paper presents the main concepts of two-echelon distribution via a systematic review, in the specific a meta-narrative analysis, in order to identify and un...

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