A Multi-Criteria Evaluation for Sustainable Supplier Selection Based on Fuzzy Sets

ÇALIK, Ahmet

It is well known that sustainability strategies have moved further and further up over the past decade due to help companies to improve the effectiveness of their marketplace and perform better in their operations. For companies, sustainability would gain long-term consequences such as getting greater profits and creating their own consumer path. The Triple Bottom Line (TBL) is a key element of the companies to achieve social, environmental, and economic benefits. Supplier’s performance directly affects a company’s performance not only environmental or economic issues but also sustainable issu ...Daha fazlası

Risk management in lean & green supply chain: A novel fuzzy linguistic risk assessment approach

PAKSOY, Turan | ÇALIK, Ahmet | YILDIZBAŞI, Abdullah | HUBER, Sandra

In today’s world, the pressure of competition considerably changed because of the increasing pressure of market competition, changes in customer expectations due to global warming and the globalization of the economy. Growing pressures in supply chain activities urge to companies to adopt new approaches by reducing waste and planning environmental friendly processes, such as recycling, reuse, and remanufacturing. There have been several studies proposed that lean activities can help make the case for environmental impact reduction to companies. Thus, most companies have reorganized their suppl ...Daha fazlası

Lean and Green Supplier Selection Problem: A Novel Multi Objective Linear Programming Model for an Electronics Board Manufacturing Company in Turkey

ÇALIK, Ahmet | PAKSOY, Turan | HUBER, Sandra

Even though various studies are proposed to evaluate and determine the best suppliers, studies generally consider similar factors such as cost, quality, delivery time etc. in the supplier selection problem. Nowadays, some lean and green issues such as on time (JIT) delivery, waste reduction, avoidance and treatment of hazardous materials, energy efficiency, occupational health and safety, corporate social responsibility, etc. started to be addressed together with the supplier selection process. Lean and Green Supply Chain Management (L-GSCM) is a dynamic field for companies to gain advantages ...Daha fazlası

A New Model for Lean and Green Closed-Loop Supply Chain Optimization

PAKSOY, Turan | ÇALIK, Ahmet | KUMPF, Alexander | WEBER, Gerhard Wilhelm

The dynamics of Supply Chain Management (SCM) have changed over the years; new paradigms are added into the SCM as a response to changes related with increasing environmental concerns and pressures. Therefore, lean and green practices in a company belong to its most important factors to enhance the company’s performance. In this study a new model, inspired by an automotive supply chain, is proposed for lean and green closed-loop supply chain management. In this model, we deal with lean and green drivers to set the objectives of the decision makers (DMs) as follows; (1) Construction: The amount ...Daha fazlası

Investigation of Economic Performance of Islamic Banks In Turkey with An Integrated Multi-Criteria Framework

AKPINAR, Ayhan | ÇİZMECİOĞLU, Sinan | ÇALIK, Ahmet

An integrated AHP-TOPSIS framework for foreign direct investment in Turkey

ÇALIK, Ahmet | ÇİZMECİOĞLU, Sinan | AKPINAR, Ayhan

Foreign direct investment (FDI) is seen as an essential part of development due to the contribution of the host country. Profits of FDI such as technology transfers, spillover benefits, and increasing competition have encouraged both of domestic firms and policymakers to attracting FDI. In the course of making investment decisions, foreign investors prefer countries that follow stable economic policies, achieve a certain level of development of financial structure, and have legal regulations that favour foreign capital. Turkey, one of the emerging market economies, met the challenges including ...Daha fazlası

Comparison of decision-making approaches to prioritization of clean air action plans for sustainable development

ÇALIK, Ahmet

Background: Clean air action plans have been prepared and are still being implemented in Turkey to control and prevent air pollution, and improve the air quality. The plans reveal a picture of the current situation and available inventory information. However, in order to implement the identified plans in real life, they need to be prioritized. This study aimed to identify and prioritize clean air action plans for Turkey using a framework of both fuzzy and crisp evaluations. Methods: In this study, priorities of the plans were identified and analyzed with a decision-making model. A three-step ...Daha fazlası

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

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