Güncel Gönderiler

  • A Fuzzy Risk Assessment Model for Hospital Information System Implementation 

    Özok, Ahmet Fahri; Yücel, Gülçin; Hoege, B.; Çebi, Selçuk (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2012-01)
    There is research which reveals negative effects of IT applications in the healthcare sector on both patients and staff. Therefore, methods are necessary to predict the risk of new healthcare information technology in order ...
  • Mixed Model Assembly Line Balancing With Sub-Assembly Selection in Automotive Industry 

    Özdemir, Rifat Gürcan; Kula, Ufuk (World Scientific Publ Co Pte Ltd, Po Box 128 Farrer Rd, Singapore 9128, Singapore, 2012)
    In this study, mixed model assembly line balancing and sub-assembly selection problems are solved jointly. The mixed model assembly line balancing problem requires that tasks are assigned to workstations with balanced ...
  • Fuzzy Modelling and Efficiency in Health Care Systems 

    Özok, Ahmet Fahri (Ios Press, Nieuwe Hemweg 6B, 1013 Bg Amsterdam, Netherlands, 2012)
    American Medical Institute reports that each year, because of the medical error, minimum fifty thousand people are dead. For a safety and quality medical system, it is important that information systems are used in health ...
  • Synchronized Two-Stage Lot Sizing and Scheduling Problem in Automotive Industry 

    Özdemir, Rifat Gürcan; Yüksektepe, Fadime (Springer-Verlag Berlin, Heidelberger Platz 3, D-14197 Berlin, GermanySpringer-Verlag Berlin, Heidelberger Platz 3, D-14197 Berlin, Germany, 2012)
    This study proposes a mixed-integer linear programming model to solve the synchronized two-stage lot sizing and scheduling problem with setup times and costs. The main motivation behind this study is based on the need of ...
  • A Radar-Enabled Collaborative Sensor Network Integrating COTS Technology For Surveillance And Tracking 

    Demirer, Rüştü Murat; Kozma, Robert; Wang, Lan; Iftekharuddin, Khan; McCracken, Ernest; Khan, Muhammad; Islam, Khandakar; Bhurtel, Sushil R. (Mdpi Ag, Postfach, Ch-4005 Basel, Switzerland, 2012-02)
    The feasibility of using Commercial Off-The-Shelf (COTS) sensor nodes is studied in a distributed network, aiming at dynamic surveillance and tracking of ground targets. Data acquisition by low-cost (<$50 US) miniature ...
  • Evaluating Machine Tool Alternatives Through Modified TOPSIS And Alpha-Cut Based Fuzzy ANP 

    Ayağ, Zeki; Özdemir, Rifat Gürcan (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2012-12)
    The problem of machine tool selection among available alternatives has been critical issue for most companies in fast-growing markets for a long time. In the presence of many alternatives and selection criteria, the problem ...
  • An Integrated Approach To Evaluating Assembly-Line Design Alternatives With Equipment Selection 

    Özdemir, Rifat Gürcan; Ayağ, Zeki (Taylor & Francis Ltd, 4 Park Square, Milton Park, Abingdon Ox14 4Rn, Oxon, England, 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 ...
  • Optimization Based Tumor Classification From Microarray Gene Expression Data 

    Dağlıyan, Onur; Üney-Yüksektepe, Fadime; Kavaklı, Halil; Türkay, Metin (Public Library Science, 185 Berry St, Ste 1300, San Francisco, Ca 94107 USA, 2011-02-04)
    Background: An important use of data obtained from microarray measurements is the classification of tumor types with respect to genes that are either up or down regulated in specific cancer types. A number of algorithms ...
  • An Intelligent Approach To Machine Tool Selection Through Fuzzy Analytic Network Process 

    Ayağ, Zeki; Özdemir, Rifat Gürcan (Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands, 2011-04)
    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 ...
  • Multi Objective New Product Development In Bakery Production Under Fuzzy Demand Parameters 

    Özdemir, Rifat Gürcan; Çiçek, Burçin; Özenç, Derya (Ios Press, Nieuwe Hemweg 6B, 1013 Bg Amsterdam, Netherlands, 2010)
    This paper deals with the problem of multi objective new product development and its solution with an intelligent approach. The proposed approach uses fuzzy parameters for economic analysis and combines a multi-criteria ...
  • Fuzzy Integrated Vulnerability Assessment Model For Critical Facilities In Combating The Terrorism 

    Akgün, İlker; Kandakoğlu, Ahmet; Özok, Ahmet Fahri (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2010-05)
    Critical facility vulnerability assessment is a highly complex strategic activity in combating the terrorism and necessitates a structured quantified methodology to support the decision-making process in defense planning. ...
  • T-Copula Generation For Control Variates 

    Hormann, Wolfgang; Sak, Halis (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2010-12)
    The standard method for generating multi-t vectors is simple and convenient but it has the disadvantage that the generated multi-normal and multi-t vectors are not similar. For t-copula models this destroys much of the ...
  • A Hybrid Approach To Concept Selection Through Fuzzy Analytic Network Process 

    Ayağ, Zeki; Özdemir, Rifat Gürcan (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2009-02)
    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 ...
  • An integrated approach to the one-dimensional cutting stock problem in coronary stent manufacturing 

    Özdemir, Rifat Gürcan; Aktin, Ayşe Tülin (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2009-07-16)
    This paper presents a two-stage approach for pattern generation and cutting plan determination of the one-dimensional cutting stock problem. Calculation of the total number of patterns that will be cut and generation of ...
  • A decision support tool for the analysis of pricing, investment and regulatory processes in a decentralized electricity market 

    Paşaoğlu Kılanç, Güzay; Or, İlhan (ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, 2008-04)
    After the liberalization of the electricity generation industry, capacity expansion decisions are made by multiple self-oriented power companies. Unlike the centralized environment, decision-making of market participants ...
  • A combined fuzzy AHP-goal programming approach to assembly-line selection 

    Ayağ, Zeki; Özdemir, Rifat Gürcan (IOS PRESS, NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS, 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 ...
  • An intelligent approach to ERP software selection through fuzzy ANP 

    Özdemir, Rifat Gürcan; Ayağ, Zeki (TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND, 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 ...
  • Parallel computing in Asian option pricing 

    Sak, Halis; Özekici, Süleyman; Boduroğlu, İlkay (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2007-03)
    We discuss the use of parallel computing in Asian option pricing and evaluate the efficiency of various algorithms. We only focus on "backward-starting fixed strike" Asian options that are continuously averaged. We implement ...
  • An analytic network process-based approach to concept evaluation in a new product development environment 

    Özdemir, Rifat Gürcan; Ayağ, Zeki (TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND, 2007-06)
    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. ...
  • A fuzzy AHP approach to evaluating machine tool alternatives 

    Ayağ, Zeki; Özdemir, Rifat Gürcan (SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS, 2006-04)
    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, ...

Daha Fazla