COPRAS ve EDAS Yöntemleriyle Yeşil Tedarikçi Seçimi

Yıl 2021, Cilt: 8 Sayı: Special Issue on International Symposium of Sustainable Logistics, 9 - 21, 23.09.2021

Ayhan Demirci

Öz

Kavram olarak sürdürülebilirlik; birbirleriyle ilişkili ekonomik, sosyal ve çevresel yaklaşımların yanı sıra tedarik zinciri bileşenlerini içerir. Bu kapsamda sürdürülebilir bir tedarik zinciri süreci için en önemli bileşen olan doğru tedarikçi seçimi önemlidir. Yeşil uygulamalara odaklanan tedarikçiler, sürdürülebilirlik için ayrıca önemlidir. Bu noktada en önemli karar destek fırsatını sağlayan çok kriterli karar verme teknikleri de yeşil tedarikçi seçiminde karar vericilere rasyonellik ve kolaylık sağlamaktadır. Bu kapsamda çalışmada öncelikle literatür taraması yapılmış ve üç alt başlıkta ele alınabilecek yeşil tedarikçi seçiminde kullanılan kriterler belirlenmiştir. Bu aşamada; Kaynak Kullanımı ve Yeşil Yetkinlik (K1-Yeşil Depolama, K2-Yeşil Geri Dönüşüm, K3-Yeşil Üretim Kapasitesi, K4-Yeşil Paketleme, K5-Kaynak Tüketimi, K6-Kirlilik Kontrolü), Ekonomik Kriterler (K7-Lojistik Maliyetleri, K8-Ürün Maliyetleri, K9-Teslim Süresi) ve Kalite (K10-Hata Oranı, K11-Garanti ve Haklar Politikaları, K12-Çevresel Yeterlilikler ve Belgeler). Daha sonra belirlenen kriterler ağırlıklandırılmış ve nihayet son yıllarda önemli gelişmeler kaydeden çok kriterli karar verme teknikleri olan COPRAS ve EDAS yöntemleri kullanılarak 7 alternatif tedarikçi arasından en uygun yeşil tedarikçi seçimi yapılmıştır. Her iki yöntem kullanılarak yapılan seçimlere göre yapılan sıralamada farklılık olsa da tedarikçi A2 ilk sırayı alarak öne çıkmıştır. Böylece tekniklerin birbirlerini destekleme durumlarına göre güçlü yönleri belirlenmiştir. Ayrıca olası uygulama hatalarının önüne geçilerek, stratejik düzeyde alınacak bir kararın ilk seferde doğru olmasına katkı sağlanmıştır.

Anahtar Kelimeler

Yeşil Tedarikçi, Lojistik, Çok Kriterli Karar Verme, COPRAS, EDAS

GREEN SUPPLIER SELECTION BY USING COPRAS AND EDAS METHODS

Öz

Sustainability as a concept; includes economic, social and environmental approaches in relation to each other and also supply chain components. In this context, the right suppliers were selected, which is the most important component for the integration of a sustainable supply chain process. The right suppliers that focus on green practices are important for sustainability. At this point, multi-criteria decision making techniques, which provide the most important decision support opportunity, also provide rationality and convenience for decision makers in the selection of green suppliers. In this context, firstly a literature search was conducted in the study and the criteria used in the selection of green suppliers, which could be discussed in three sub-headings, were determined. At this stage; Resource Utilization and Green Competence (C1-Green Storage, C2-Green Recycling, C3-Green Production Capacity, C4-Green Packaging, C5-Resource Consumption, C6-Pollution Control), Economic Criteria (C7-Logistics Costs, C8-Product Costs, C9-Delivery Time) and Quality (C10-Error Rate, C11-Warranty and Rights Policies, C12-Environmental Competencies and Documents). Then, the determined criteria were weighted and finally, green suppliers were selected using COPRAS and EDAS, which are the multi-criteria decision making techniques that have made significant improvements in recent years. As a result, the most suitable supplier was selected among the determined 7 alternative suppliers. Although there is a difference in the ranking made according to the selections by using both methods, the supplier A2 took the first places and came to the fore.The reason for choosing two different techniques in the study is that the techniques give similar results with each other and thus the strengths of the techniques are determined. In addition, it is to contribute to the correctness of a decision to be made at the strategic level at the first time, especially by preventing possible mistakes.

Anahtar Kelimeler

Green Supplier, Logistics, Multi-Criteria Decision making, COPRAS, EDAS

Kaynakça

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