Now showing items 1-9 of 9


    Authors:Ayağ, Zeki
    Publisher and Date:(Intl Inst Social & Economic Sci, 2016)
    Solar energy is the most readily available source of energy, and one of the most important sources of the renewable energy, because it is non-polluting and helps in lessening the greenhouse effect. Main problem of establishing a solar power plant is to determine its location. In the presence of many location alternatives and evaluation criteria, a multiple-criteria decision making problem arises. In this work, the location problem will be solved by using analytic hierarchy process (AHP) to figure ...

  • A fuzzy AHP approach for financial performance evaluation airline companies 

    Authors:Gürel, Sinem
    Publisher and Date:(Kadir Has University, 2012)
    Previous researches focused on operation performance. This thesis purposes for evaluating the financial performance of the airlines. In order to achieve financial objectives to be incorporated into the financial performance of their degree. It is a method to measure the results of a company?s operations in a monetary term. The problem is modeled by multi-criteria decision making (MCDM) one. Multi criteria decision making (MCDM) is a method of the most important fields of operations research and ...

  • A fuzzy AHP-VIKOR approach for evaluation of educational use simulation software packages 

    Authors:Samanlıoğlu, Funda; Ayağ, Zeki
    Publisher and Date:(IOS Press, 2019)
    In this study, an intelligent, integrated approach is presented to help educators select the best simulation software package. Selecting the best simulation software package for educational use is a complex multiple criteria decision making (MCDM) problem with several potentially conflicting quantitative and qualitative criteria. In this paper, two fuzzy MCDM methods; fuzzy Analytic Hierarchy Process (F-AHP) and fuzzy VIsekriterijumska optimizacija i KOmpromisno Resenje (F-VIKOR) are integrated ...

  • A Fuzzy ANP-Based GRA Approach to Evaluate ERP Packages 

    Authors:Ayağ, Zeki; Yücekaya, Ahmet
    Publisher and Date:(IGI Global, 2019)
    One of the major problems that most companies face with during the implementation of an ERP system is to determine the best satisfying ERP software based on their needs and expectations. Because an improperly selected ERP software might lead to time loss and increased costs, and in the long run, a loss of market share. Therefore, the ERP evaluation process for companies becomes to a vital point. On the other hand, evaluating ERP software alternatives under a set of criteria leads us to a ...

  • A hesitant fuzzy linguistic terms set-based AHP-TOPSIS approach to evaluate ERP software packages 

    Purpose In this paper, two popular multiple-criteria decision-making (MCDM) methods with hesitant fuzzy logic approach; hesitant fuzzy analytic hierarchy process (hesitant F-AHP) and hesitant fuzzy the technique for order preference by similarity to ideal solution (HF-TOPSIS) are integrated as HF-AHP-TOPSIS to evaluating a set of enterprise resource planning (ERP) alternatives and rank them by weight to reach to the ultimate one that satisfies the needs and expectations of a company. Design/meth ...

  • An Intelligent Approach For The Evaluation Of Transformers In A Power Distribution Project 

    Authors:Samanlıoğlu, Funda; Ayağ, Zeki
    Publisher and Date:(IOS Press BV, 2020)
    In this study, a hybrid approach is presented for the evaluation and selection of transformers in a power distribution project. Ranking transformers and selecting the best among alternatives is a complex multiple criteria decision making (MCDM) problem with various possibly conflicting quantitative and qualitative criteria. In this research, two hesitant fuzzy MCDM methods; hesitant fuzzy Analytic Hierarchy Process (hesitant F-AHP) and hesitant fuzzy Preference Ranking Organization Method for ...

  • Minimizing the defect rate using six sigma DMAIC method; a case study in SUPSAN A.Ş. 

    Authors:Aslan, Nazmiye Yağmur
    Publisher and Date:(Kadir Has University, 2016)
    Today manufacturing industries are highly impacted by the fast changing economic conditions. In this scenario, manufacturing industries become face to face with global competition due to globalization. The major problems of these industries are declining profit margin, customer demand for high quality product and product variety. Therefore so many organizations, especially in manufacturing sector, understand the importance of quality. Companies try to implement various strategies and innovations ...

  • A network model for the location-routing decisions of a logistics company 

    In this paper, part of the logistics network of one of the leading logistics companies in Turkey is analyzed. Data related to the candidate warehouse locations, supplies and demands of customers are collected. A network model is developed in order to reconfigure the logistics network. The aim of the mathematical model is to help decision makers decide on the locations of warehouses, as well as routing products from suppliers to the distribution center; from distribution center to warehouses; and ...

  • Six sigma project evaluation under fuzziness in food industry 

    Authors:Şentürk, Özlenen
    Publisher and Date:(Kadir Has University, 2013)
    Modern-day business world is under constant development at production and service market. Common purpose is to return profit by optimizing costs and raise customer satisfaction to maintain acquired success. It is observed at processes that more service and production are provided by less work force. In food sector which is one of the best known service and production areas, if there will be a new production system "knowledge" should be used as base. On the other hand it is necessary to focus on ...