Now showing items 1-20 of 28

  • A combined fuzzy AHP-goal programming approach to assembly-line selection 

    Authors:Ayaǧ, Zeki; Ozdemir, Rifat Gurcan
    Publisher and Date:(IOS Press, 2007)
    In mass production assembly-line balancing (ALB) problem has been a critical and repetitive issue for companies for long time. On the other hand equipment selection for stations has also been another important problem at the design stage of an assembly-line system. In this paper both problems are handled simultaneously. Therefore first goal programming (GP) method a well-suited technique is used to develop a preemptive formulation to joint both of the problems when the nature of the problem consists ...

  • A combined fuzzy AHP-simulation approach to CAD software selection 

    Authors:Ayaǧ, Zeki
    Publisher and Date:(Taylor & Francis Ltd, 2010)
    In this paper a combined approach where the fuzzy analytic hierarchy process (AHP) and simulation come together is presented to select the best computer-aided design (CAD) software out of the available options in the market. The fuzzy AHP is used due to the vagueness and uncertainty of the judgements of a decision maker(s) because the crisp pair-wise comparison in the conventional AHP seems to be insufficient and imprecise to capture the right judgements of the decision maker(s). In this study ...

  • A fuzzy AHP approach to evaluating machine tool alternatives 

    Authors:Ayaǧ, Zeki; Özdemir, Rifat Gürcan
    Publisher and Date:(Springer, 2006)
    Selecting process of a machine tool has been very important issue for companies for years because the improper selection of a machine tool might cause of many problems affecting negatively on productivity precision flexibility and company's responsive manufacturing capabilities. On the other hand selecting the best machine tool from its increasing number of existing alternatives in market are multiple-criteria decision making (MCDM) problem in the presence of many quantitative and qualitative ...

  • A fuzzy AHP-PROMETHEE II approach for evaluation of solar power plant location alternatives in Turkey 

    Authors:Samanlioglu, Funda; Ayaǧ, Zeki
    Publisher and Date:(IOS Press, 2017)
    Solar energy produced through a solar power plant is a freely available non-polluting renewable source of energy that reduces the greenhouse effect. Selecting the best location for a solar power plant among several location alternatives is a complicated multiple criteria decision making (MCDM) problem since several potentially conflicting quantitative and qualitative criteria needs to be taken into consideration. In this paper of the most commonly used MCDM methods in literature

  • A Fuzzy ANP Approach To Evaluate Computer Simulation Packages 

    Authors:Ayaǧ, Zeki
    Publisher and Date:(Inderscience Enterprises Ltd., 2016)
    In this study an intelligent approach is presented to help any simulation practitioner to evaluate simulation software alternatives and determine the best satisfying one based on his/her needs. On the other hand this evaluation process is a typical multiple criteria decision making (MCDM) problem in the presence of evaluation criteria and a set of possible alternatives and there are many methods in the literature which have been used to successfully carry out this difficult and time-consuming ...

  • A fuzzy ANP-based GRA approach to evaluate ERP packages 

    Authors:Ayaǧ, Zeki; Yücekaya, Ahmet Deniz
    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 multiple-criteria ...

  • A fuzzy QFD approach to determine supply chain management strategies in the dairy industry 

    Authors:Ayaǧ, Zeki; Samanlioglu, Funda; Buyukozkan, Gulcin
    Publisher and Date:(Springer, 2013)
    The aim of this study is to identify the crucial logistics requirements and supply chain management (SCM) strategies for the dairy industry. For product or service development quality function deployment (QFD) is a useful approach to maximize customer satisfaction. The determination of design requirements and supply chain management strategies are important issues during QFD processes for product or service design. For this reason a fuzzy QFD methodology is proposed in this study to determine these ...

  • A hybrid approach to concept selection through fuzzy analytic network process 

    Evaluating conceptual design alternatives in a new product development (NPD) environment has been one of the most critical issues for many companies which try to survive in the fast-growing world markets. Therefore most companies have used various methods to successfully carry out this difficult and time-consuming evaluation process. Of these methods analytic hierarchy process (AHP) has been widely used in multiple-criteria decision-making (MCDM) problems. But in this study we used analytical ...

  • A hybrid approach to machine-tool selection through AHP and simulation 

    Authors:Ayaǧ, Zeki
    Publisher and Date:(Taylor & Francis, 2007)
    The selection process of a machine tool has been a critical issue for companies for years because the improper selection of a machine tool might cause many problems having a negative effect on productivity precision flexibility and a company's responsive manufacturing capabilities. Therefore in this paper to determine the best machine tool satisfying the needs and expectations of a manufacturing organization among a set of possible alternatives in the market a hybrid approach is proposed which ...

  • A MULTIPLE-CRITERIA DECISION MAKING METHOD FOR EVALUATING SOLAR POWER PLANT LOCATION ALTERNATIVES 

    Authors:Ayaǧ, Zeki
    Publisher and Date:(EDITURA ASE, 2015)
    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 out ...

  • Add to Marked List 36 of 36 An intelligent approach for the evaluation of innovation projects 

    Authors:Samanlıoğlu, Funda; Ayaǧ, Zeki
    Publisher and Date:(IOS Press, 2020)
    In this study, an intelligent approach is presented for the evaluation and selection of innovation projects. Selecting the best innovation project is a complicated multiple criteria decision making (MCDM) problem with several potentially competing quantitative and qualitative criteria. In this paper, two hesitant fuzzy MCDM methods; hesitant fuzzy Analytic Hierarchy Process (hesitant F-AHP) and hesitant fuzzy VIsekriterijumska optimizacija i KOmpromisno Resenje (hesitant F-VIKOR) are integrated ...

  • An analytic network process-based approach to concept evaluation in a new product development environment 

    Authors:Ayaǧ, Zeki; Özdemir, Rifat Gürcan
    Publisher and Date:(Taylor & Francis, 2007)
    Selecting the best product concept is one of the most critical tasks in a new product development (NPD) environment. Making decisions at this stage becomes very difficult due to imprecise and uncertain product requirements. So the evaluation process of determining the most satisfying conceptual design has been a very vital issue for companies to survive in fast-growing markets for a long time. Therefore most companies have used various methods to successfully carry out this difficult and time-consuming ...

  • An integrated approach to concept evaluation in a new product development 

    Authors:Ayaǧ, Zeki
    Publisher and Date:(Springer, 2016)
    A new product development (NPD) process can be thought as a comprehensive process in which the design is progressively detailed through a series of phases. At the end of each phase a design review is held to approve the design and release or not it to the next level. As one of these phases concept selection aiming to select the most appropriate concept for further development is conducted earlier in the process. As the further development progresses on a selected concept it becomes more difficult ...

  • An integrated approach to evaluating assembly-line design alternatives with equipment selection 

    Authors:Ozdemir, Rifat Gurcan; Ayaǧ, Zeki
    Publisher and Date:(Taylor & Francis Ltd, 2011)
    The design and implementation of assembly-line systems have been critical issues for companies since the first assembly-line was started at the Ford Highland Plant in 1913. From that time onwards most companies have met with various problems at the design and implementation stages of assembly-line systems two of which are the allocation of different work elements to various workstations and the proper equipment selection for workstations. Therefore in this article to overcome both the above-mentioned ...

  • An intelligent approach to CAM software selection 

    Authors:Ayaǧ, Zeki
    Publisher and Date:(IEEE, 2012)
    In this paper an intelligent approach is presented to help the companies select most suitable CAM software for their current and future needs. For this purpose fuzzy AHP method is used to carry out CAM selection process more effectively easily and applicable for a company. Shortly the objectives of the research are

  • An intelligent approach to ERP software selection through fuzzy ANP 

    Authors:Ayaǧ, Zeki; Ozdemir, Rifat Gurcan
    Publisher and Date:(Taylor & Francis, 2007)
    During the implementations of enterprise resource planning (ERP) systems most companies have experienced some problems one of which is how to determine the best ERP software satisfying their needs and expectations. Because improperly selected ERP software may have an impact on the time required and the costs and market share of a company selecting the best desirable ERP software has been the most critical problem for a long time. On the other hand selecting ERP software is a multiple-criteria ...

  • An intelligent approach to machine tool selection through fuzzy analytic network process 

    Authors:Ayaǧ, Zeki; Ozdemir, Rifat Gurcan
    Publisher and Date:(Springer, 2011)
    In this study we utilize analytic network process (ANP) a more general form of AHP for justifying stand-alone machine tools out of available alternatives in market due to the fact that AHP cannot accommodate the variety of interactions dependencies and feedback between higher and lower level elements. However due to the vagueness and uncertainty on judgments of a decision-maker the crisp pair wise comparison in the conventional ANP seems to be insufficient and imprecise to capture the right judgments ...

  • An intelligent approach to prioritize logistics requirements in food industry 

    Authors:Ayaǧ, Zeki
    Publisher and Date:(ExcelingTech Publishers, 2014)
    The aim of this study is to analyze dairy food industry and to determine the priorities of important logistics requirements (LR) based on customer requirements as a part of a supply management system. For product or service development quality function deployment (QFD) is a useful approach to maximize customer satisfaction. The determination of the priorities of the LR is an important issue during QFD process for product or service design. For this reason in this work an integrated approach ...

  • An intelligent approach to supplier evaluation in automotive sector 

    Authors:Ayaǧ, Zeki; Samanlioglu, Funda
    Publisher and Date:(Springer, 2016)
    During the process of supplier evaluation selecting the best desirable supplier is one of the most critical problems of companies since improperly selected suppliers may cause losing time cost and market share of a company. For this multiple-criteria decision making selection problem in this paper a fuzzy extension of analytic network process (ANP) which uses uncertain human preferences as input information in the decision-making process is applied since conventional methods such as analytic ...

  • Analytic Network Process (ANP) for solar power plant location problem 

    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 Network Process (ANP) to figure out ...