Journal of ETA Maritime Science

3-15

Authors: Bekir ŞAHİN

Voyage planning is of significance considering the oil consumption, time and safety factors. Determining the proper route after considering multiple convergent factors synchronously is one of the most important subjects in ship management that requires special expertise. The purpose of this paper is to develop a fuzzy analytic hierarchy process (FAHP) extended version of Dijkstra algorithm, and investigate the most prior routing problem in maritime environment. In the literature, there exist many Dijkstra applications but these studies lack of multiple decision makers, consistency control of decision matrices and multiple criteria, which can either be cost or benefit. In this model, subjective judgments and personal experience directly involve in the decision-making process. The proposed FAHP extended Dijkstra algorithm (hereafter FAHP-Dijkstra) improves the capabilities of handling the vague criteria in the presence of fuzziness. This study aims to provide some benefits of oil consumption, time and safety to manned or unmanned ships by presenting a novel route optimization algorithm.

33-41

Authors: Murat AYYILDIZ, Ahmet Ziya SAYDAM, Murat ÖZBULUT

In this study, 2-D wave making characteristics of a submerged hydrofoil has been investigated in a numerical fashion. Experimental data available for different depths of submergence and flow velocities have been compared to the results obtained by a commercial RANS CFD code and an in-house SPH code. The capabilities of the numerical approaches in terms of capturing the free surface deformation have been assessed. At high Froude numbers, the induced wave profiles have been observed to exhibit an unsteady nature by both numerical methods. The pressure contours obtained from the numerical analysis have also been compared with each other. It has been seen that the agreement between the results of the well-established RANS method and recently progressing SPH technique is encouraging for further development.

51-63

Authors: İlkyaz İLDEŞ, Aysu GÖÇER

The increasing importance of marketing services has led services industries to pursue ways of providing better services and improve customer satisfaction in a competitive marketplace. Knowing what can be promoted and what customers consider in choosing the service provider are important factors in a strategic marketing plan. Recognizing core competences with customer expectations and perceptions is undoubtedly the best tool for success. While services marketing has been studied for many services industries, logistics, particularly customs services, is rarely addressed. Exploiting services quality and perception scales, this qualitative study applied content analysis to semi-structured interviews to explore the marketing criteria of customs service providers from a dyadic perspective within businessto- business (B2B) services. Marketing criteria for customs services were categorized as company, personnel, and service-oriented. Three genuine dimensions were created in accordance with their relevance to the service provider company, employees working in the service provider company and the service itself. The results reveal that customs services marketing criteria taken into consideration by customers for service provider choice can be different when compared to other services within a B2B environment. This study contributes to services marketing regarding customs services by comparing the factors of logistics services quality and perception literature.

79-96

Authors: Murat YORULMAZ

Örgüt içindeki temel unsurlardan biri olan insan kaynağı, örgütleri amaçlarına ulaştıran en etkili ve önemli kaynaklar arasındadır. Dolayısıyla insan kaynağının iyi yönetilmesi örgütlerin başarısının da ön koşuludur. Bu nedenle de çalışanların örgütlerine ve işlerine yönelik tutum ve davranışlarının anlaşılması ve yönetilmesi önemli bir olgu olarak kabul edilmektedir. Bu çalışmanın amacı, yöneticilerin yakından ilgili olduğu örgütsel tutum ve davranışlardan; iş tatmini ile örgütsel vatandaşlık davranışlarının, bireysel iş performansına olan etkisini, feribot ve deniz otobüslerinde çalışan gemi adamları örnekleminde incelemek ve gemi adamlarının çalıştıkları bölümlere göre, söz konusu örgütsel tutum ve davranışlarda anlamlı farklılıklar olup olmadığını ortaya çıkartmaktır. Anket yöntemiyle yapılan çalışmada 726 gemi adamından elde edilen verilerin analizi sonucunda, aralarında anlamlı ilişkiler bulunan iş tatmini ve örgütsel vatandaşlık davranışının, bireysel iş performansını pozitif yönde etkilediği ve iş tatmini ile iş performansı arasındaki ilişkide örgütsel vatandaşlık davranışının kısmi ara değişken etkisinin olduğu tespit edilmiştir. Diğer taraftan güverte, makine ve yardımcı hizmetli sınıfı gemi adamları arasında, örgütsel vatandaşlık davranışları ve iş performansı açısından istatistiksel anlamda anlamlı farklılıklar olduğu saptanmıştır.