INTEGRATED ORDERING POLICIES OF INVENTORY AND AN EXAMPLE FOR TIRE COMPANIES

Year 2011, Volume: 13 Issue: 1, 41 - 52, 01.12.2011

Turan Erman Erkan Yavuz Selim Özdemir

Abstract

In today's
competitive market conditions, the reduction of inventory costs is increasingly
important for surviving enterprises. One of the most important cost items that
can be reduced inventory costs. In this study, single vendor - multi buyer
supply chain system relationship investigated. Aim of the study, by adopting a
common approach of buyers with sellers, each buyer and the seller determines
the order in certain time intervals and thus give the seller and buyer is to
minimize the costs of the common stock. This approach provides a tremendous
advantage to the seller but the buyer costs may increase. To balance this
increase, the seller must make price discounts for buyers. In this research, a
non-linear model used for determine minimum stock and system costs. This model
applied on real data which were collected from Ankara area main tire vendor and
his sub buyers. In case of application of the model used in this study, tire
vendor can be provided to respond more quickly to the needs of sub-dealers.
Also overall system cost and can also decrease has occurred.

Keywords

Single Vendor – Multi Buyer, Supply Chain Management, Common Replenishment Epochs

BÜTÜNLEŞİK TEDARİK ZİNCİRİ YAKLAŞIMI VE BİR LASTİK ANA BAYİİ UYGULAMASI

Abstract

Günümüz rekabetçi piyasasında, işletmelerin hayatta
kalabilmesi ve rekabet edebilmesi için maliyetlerin düşürülmesi giderek daha
büyük bir önem kazanmaktadır. Azaltılabilecek en önemli maliyet kalemlerinden
bir tanesi de stok maliyetleridir. Bu çalışmada, bir satıcı ile birden çok
alıcı arasındaki malzeme tedarik zinciri ilişkileri incelenmiştir. Çalışmanın
amacı, alıcılar ile satıcının ortak bir yaklaşım benimseyerek, her alıcının
siparişlerini satıcının belirlediği belirli zaman aralıklarında vermesi ve
böylece satıcı ile alıcılardan oluşan sistemin ortak stok maliyetlerinin en aza
indirilmesidir. Ancak bu durumda alıcıların maliyetlerinde belli bir miktar
artış meydana gelmektedir. Bunu dengeleyebilmek için, satıcının alıcılara
iskonto yapması gerekmektedir. Bu araştırmada, doğrusal olmayan bir model ile
en küçük stok ve sistem maliyetleri elde edilmeye çalışılmıştır. Araştırmada
kullanılan model, Ankara'da bir lastik bölge bayisinden ve onun alt
bayilerinden alınan gerçek veriler üzerinde uygulanmıştır. Çalışmada kullanılan
modelin uygulanması durumunda, lastik bölge bayiliğinin, alt bayilerinin
ihtiyaçlarına daha hızlı cevap vermesi sağlanabilir. Ayrıca sistemin genel
maliyetlerinde de önemli bir azalma oluşacaktır.

Keywords

Tekil Satıcı – Çoğul Alıcı, Tedarik Zinciri Yönetimi, Ortak Tedarik Yaklaşımı

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