Comparison of methods in FAHP with application in supplier selection

YAPICI PEHLİVAN, Nimet | PAKSOY, Turan | ÇALIK, Ahmet

Green supply chain management (GSCM) is described as the combination of environmental thinking and supply chain management (SCM) encompassing product design, material sourcing and selection, manufacturing processes, delivery of the nal product to the consumer, and endof-life management of the product (Srivastava, 2007; Tseng and Chiu, 2013). Environmental sustainability of a supply chain depends on the purchasing strategy of the supply chain members. Most of the supply chain models focus on cost, quality, lead time, carbon emission, etc., issues for supplier selection. Shaw et al. (2012) prese ...Daha fazlası

How Do Tablets Compel to Change The Toy Industry: A Research From Consumer Behaviour Perspective

AKPINAR, Ayhan | ÇİZMECİOĞLU, Sinan | ÇALIK, Ahmet

Research and Development Approaches and İmplementation Issues in Agricultural Machinery Sector; Konya Case

ERYÜRÜK, Şule | NESİMİOĞLU, Barış Samim | YILDIZ, Hüseyin Bekir | ALTUN, Hüseyin Oktay | YUMUŞAK, Semih | AÇIKGÖZ, Hulusi | BAĞRIYANIK, Ozan İbrahim Ethem | ÇALIK, Ahmet

In Turkey, agricultural manufacturing plays a big role in industry as a sector and can produce almost all categories of agricultural equipment. When considered agricultural machinery sector, it is ranked as the 5th biggest machinery sector in Turkey, covering 7% of the total exports and in domestic market, agricultural machinery sector is ranked as 4th sector. From a regional point of view, it can be stated that İstanbul, Ankara, İzmir, Konya, AydIn, Manisa and BalIkesir regions are prominent in the sector in terms of both manufacturing volume and number of employments. However, when it comes ...Daha fazlası

A Novel Interactive Fuzzy Programming Approach for Optimization of Allied Closed-Loop Supply Chains

ÇALIK, Ahmet | PEHLİVAN, Nimet Yapıcı | PAKSOY, Turan | WEBER, Gerhard Wilhelm

In recent years, the relationship between companies and suppliers has changed with the continuous rise in environmental awareness and customer expectations. In order to fulfill customers’ needs, the actors in a Supply Chain (SC) network sometimes compete and sometimes cooperate with each other. In SC management, both competitive and collaborative strategies have become important and have required different points of view. In a collaborative environment, companies should strive for common targets with mutual relationship. After managers decided to share their resources, some positive effects ha ...Daha fazlası

Yüklenici Değerlendirme Sürecinde Aralıklı Tip-2 Bulanık Topsis Yöntemi Uygulaması: Küçük ve Orta Ölçekli İşletmelerde (Kobi'ler) Bir Örnek Olay Çalışması

ÇALIK, Ahmet

Bu çalışma, Küçük ve Orta Ölçekli İşletme (KOBİ)lerde en uygun yüklenicileri seçmede yardımcı olacak Çok Kriterli Karar Verme (ÇKKV) çerçevesi geliştirmeyi amaçlamaktadır. Önerilen çerçeve, TOPSIS yöntemi ve bulanık mantık teorisinin bir kombinasyonunu kullanmaktadır ve üç aşamadan oluşmaktadır. İlk olarak, değerlendirme kriterlerini belirlemek ve sonuçlandırmak için yüklenici seçimi ve teklif değerlendirmesi hakkında ayrıntılı bir literatür taraması derlenmiştir. Ardından belirsizliklerin üstesinden gelmek için aralık tip-2 bulanık kümeler ve dilsel değişkenler kullanılmış ve değerlendirme kr ...Daha fazlası

Aralık Tip-2 Bulanık AHP Yöntemi ile Üçüncü Parti Tersine Lojistik (3PTL) Firma Seçimi

ÇALIK, Ahmet | PAKSOY, Turan

Ömrü bitmiş ve kullanılmış ürünlerin yönetimi küreselleşme, yasal düzenlemeler ve artan çevresel farkındalık nedeniyle önemli bir lojistik faaliyeti haline gelmiştir. Tersine lojistik ağındaki akışın yönetimi özel altyapı ve uzmanlık gerektirdiği için, işletmelerin ağlarındaki hangi firma ile çalışacağı önemli bir sorundur. Bu nedenle işletmeler Üçüncü Parti Tersine Lojistik (3PTL) firmalarına (sağlayıcılarına) yönelmişlerdir. 3PTL, işletmelerin tersine lojistik ağındaki ihtiyaç duydukları hizmetlerin veya lojistik faaliyetlerinin dış kaynak kullanılarak karşılanmasıdır. Bu çalışmada, en iyi 3 ...Daha fazlası

Multi-level optimization of an automotive closed-loop supply chain network with interactive fuzzy programming approaches

YILDIZBAŞI, Abdullah | ÇALIK, Ahmet | PAKSOY, Turan | ZANJİRANİ FARAHANİ, Reza | WEBER, Gerhard Wilhelm

Closed-Loop Supply Chain (CLSC) management has attained appreciable attention over the last few years. CLSC management allows companies to manage their recovery and recycling activities of end products. Due to the latest developments in the world, producers are responsible for the collection, refurbishing, repairing and disassembly of end products at the end of their lives. This paper develops a mixed-integer CLSC model that is inspired by the automotive industry. In this model, we consider three Decision Makers (DM): Plant, Dismantler Center and Customer. Each DM has individual objectives and ...Daha fazlası

An integrated fuzzy AHP/DEA approach for performance evaluation of territorial units in Turkey

ÇALIK, Ahmet | YAPICI PEHLİVAN, Nimet | KAHRAMAN, Cengiz

Due to the differences between regions and sub-regions in the countries, some problems come out especially in economic and social life. The issue of differences of regions has been widely implemented to evaluate the economic performance of Turkey in many disciplines. The objective of this paper is to evaluate the efficiency of 26 sub-regions of NUTS-2 classification using integration Fuzzy Analytic Hierarchy Process (FAHP) with Data Envelopment Analysis (DEA). The integrated FAHP/DEA method comprises two stages. In the first stage, linguistic terms are used to determine the decision makers’ op ...Daha fazlası