Two-Stage Versus Single-Stage Inventory Models with or without Repair Ability

Date

2012-09-07

Author

Bakal, İsmail Serdar
Bayındır, Zeynep Pelin

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

136
views

0
downloads

In this study, we consider an inventory system for a single item, which is being used in the military operations. In the current system, there is a two-echelon inventory setting which consists of a single stock point, the central depot, in the upper echelon and several stock points, the bases, in the lower echelon. A continuous review base-stock policy is used by all facilities. The military headquarters responsible for inventory management identified improvement opportunities such as acquiring repair ability and changing the structure of the supply chain from a two-echelon model to a single echelon model. Considering these opportunities, we investigate four different alternative inventory systems, single-echelon and two echelon models with or without repair ability. Our objective is to determine if and under what conditions each alternative results in lower costs.

Subject Keywords

Repair ability, Single-echelon model, Central depot, Optimal base stock level, Failed ıtem

URI

https://hdl.handle.net/11511/44671

DOI

https://doi.org/10.1007/978-3-319-00795-3_83

Collections

Department of Industrial Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

A two-echelon inventory problem with recoverable items Tavşancı, Levent; Erkip, Nesim; Department of Industrial Engineering (2002) In this study, a two-echelon inventory system with one-for-one replenishments for a single type of recoverable item is considered. The inventory is reviewed continuously while demand occurs with exponential failure rates at the lower echelon. The replenishments for the backordering bases are supplied either from the central depot or from a neighboring base via lateral transshipments. The effects of incorporating a new inventory control variable (hold back level, H) on the emergency lateral transshipments th...
Bir Savunma Sanayi Şirketinde Malzeme Envanter Yönetim Sisteminin Yeniden Tasarlanması Karabaş, Tolga; Meral, Fatma Sedef; Özdemir, Rüstem Ozan; Nartok, Yusuf Mahir; Karaaslan, Mert (2017-12-01) Bu çalışmada, bir savunma sanayi şirketindeki satın alınan malzemelerin envanter yönetim sistemi ve bu sistemdeki problemler ele alınmıştır. Proje kapsamında ilgilenilen sistem, malzeme taleplerinin açılmasından malzemelerin üretim atölyelerine aktarılmasına kadar geçen süreçleri içermektedir. Uygun zamanda ve miktarda tedarik edilen malzemeler, sözleşme üzerine üretim yapan şirket için hayati önem arz etmekte ve tedarikteki olası gecikmeler şirket için prestij kaybının yanı sıra büyük maddi yük oluşturabil...
An assessment of a two-echelon inventory system againstalternative systems Özpamukçu, Serkan; Bakal, İsmail Serdar; Bayındır, Zeynep Pelin; Department of Industrial Engineering (2011) In this study, we focus on a real life problem that involves a single item which is used in military operations. The items in use fail according to a Poisson process and lead times are deterministic. Four alternative inventory control models are developed. Among these models, a two-echelon system consisting of a depot in the upper and several bases in the lower echelon is operated currently. This system is compared to a single-echelon system that consists of several bases. The comparison reveals the importa...
Multi-aspect data fusion applied to electromagnetic target classification using enetic algorithm Sayan, Gönül (2000-07-07) Electromagnetic target detection and classification is an important problem relevant not only to military applications but also to civilian use. In the problem of a breast tumor detection and identification [1], for instance, the main concern is accuracy. In the case of the recognition of a military target such as an aircraft or a ship, on the other hand, speed of classification is as important as the accuracy of the decision as such a decision should be made within a fraction of a second. For the K-pulse t...
Cognitive Modelling of Opposing Forces at the Simulation Analysis Lab Topcu, Yeliz; Zeyrek Bozşahin, Deniz; Ulubay, Murat; Department of Cognitive Sciences (2021-12-09) In modern military systems, engagement simulations are used to assist in conceptual design and verification of weapon systems. The quality of these simulations is directly proportional to the level of authenticity of the behavior of the components that are modeled. For this reason, it is important to represent the behavior of human controlled components by accounting for the cognitive aspects including human limitations and flaws. In various studies, the behaviors of these components are modeled using cogni...

Citation Formats

İ. S. Bakal and Z. P. Bayındır, “Two-Stage Versus Single-Stage Inventory Models with or without Repair Ability,” 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/44671.