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    Application of AHP and VIKOR methods under interval type 2 fuzzy environment in maritime transportation
    (Pergamon-Elsevier Science Ltd, 2017) Soner, Omer; Celik, Erkan; Akyüz, Emre
    The aim of this paper is to provide not only a hybrid theoretical methodology in multiple-attribute decision making problems but also a practical application in maritime transportation industry. The proposed hybrid approach integrates Analytic Hierarchy Process (AHP) method into VlseKriterijumska Optimizacijia I Kompromisno Resenje, (VIKOR) technique under interval type-2 fuzzy (IT2F) environment. While AHP and VIKOR provides a comprehensive framework to solve multiple-attribute decision making (MADM) problems in maritime transportation industry, the IT2F enables to deal with much uncertainty during linguistic assessment of decision-makers. The proposed approach is demonstrated with a hatch cover design selection problem since it has utmost importance in structure of bulk carrier ships to prevent water ingress and protect cargo form the external damages. Besides its robust theoretical insight, the paper has practical contribution to the naval engineers, classification societies and ship owners who have difficulty in deciding appropriate hatch cover type during construction of the ship.
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    Establishing a central operation approval system in ship management companies based on a human reliability assessment model
    (Crc Press-Taylor & Francis Group, 2017) Soner, Omer; Akyüz, Emre; Celik, Metin
    This study aims at establishing a central approval mechanism in ship management companies to monitor the probable human errors along with the critical operations. The idea behind the paper is to control the dynamics of error producing conditions (EPC) parameters at shipboard platform. Since the human error reduction is a present great challenges of ship operator, the proposal concept has flexibility to cover the ship fleet in an advance user interfaces. The operation approval system is capable of increasing situation awareness in the probable causes leading to human errors. The proposed central operation approval system is an extension of the research project entitled "Human Reliability Analysis and Monitoring System Proposal in Shipboard Operations (H-RAMS)" (Project no: 114M352) supported by the Scientific and Technological Research Coucil of Turkey (TUBITAK).