Ali Cemal Töz

Trajectory prediction of oil spill with Pisces 2 around Bay of Izmir, Turkey

The purpose of this study is to determine the risky areas by simulating trajectory of ship based oil spill in Bay of Izmir. To get well informed about fate, this study makes the best possible use one trajectory model. PISCES 2 (Potential Incident Simulation, Control and. Evaluation System), has been conducted for simulation of main weathering processes of oil spill. Hence in order to identify the risky areas, two scenarios have been developed depending on the type and amount of pollutants. In this study it is concluded that Yenikale, Inciralti and Guzelbahce will be at risk of contamination in case of accidental oil spill at Yenikale Entrance. Finally, the PISCES 2 software provided highly reliable solutions in evaporation rate and dispersion rate calculations when compared to approaches accepted in the literature. However in the surface area calculations, there is a serious difference between the size of the area calculated by the software and the size of the area proposed by oil spill science.

Performance evaluation of oil spill software systems in early fate and trajectory of oil spill: comparison analysis of OILMAP and PISCES 2 in Mersin bay spill

The aim of this study is to evaluate the performance level of two advanced oil spill software systems in early transport and fate of oil spill through algorithms accepted in oil spill literature. To do this, the performance level of software systems mostly used in real cases have been compared. OILMAP (the oil spill prediction modeling system) and PISCES 2 (potential incident simulation, control and evaluation system) have been used for spill trajectory in the light of four spill scenarios. The findings reveal that the OILMAP has predicted a relatively larger area of spill. In addition, OILMAP has achieved closer results to the calculations of approaches adopted in the literature for evaporation calculations. Besides, OILMAP software has provided highly reliable results in the evaporation rates of oil compared to the calculations of PISCES 2. On the other hand, as for the determination of the risky area, both software systems have yielded results with high reliability values, which could be used in taking precautions against oil spill in such areas.

The impact of Perceived Service Quality on Satisfaction: An Application on Marina Customers in Turkey

The main purpose of this study was to investigate the impact of perceived service quality on customer satisfaction in marinas in Turkey. A total of 134 customers from eight marinas which were included in the sample have participated to the research. The impact of services that customers receive on perceived service quality levels was analyzed. This study mainly concludes that there is direct impact of quality of the services on customer satisfaction in marinas in Turkey. The results also show that the highest impact on customer satisfaction was “reliability and competence”, followed by “management, planning and standards”, and “physical assets, respectability and environment”. Furthermore, the study shows that foreign and Turkish customers have significantly different opinions on some service quality variables. In the future a more comprehensive study could be done during high season. In addition, the survey could include additional languages at other marinas, which would increase the sample size. Future studies could compare marinas in other countries.

MARİNA MÜŞTERİLERİNİN MARİNALARDA ALDIKLARI HİZMETLERİN KALİTE DÜZEYLERİNE YÖNELİK ALGILARININ ANALİZİ

Marina isletmeleri, yat turizminin denizlerdeki vazgecilmez durak noktalari olmasi nedeniyle deniz turizminin en onemli hizmet saglayici aktorlerden birisidir. Turkiye’de, ozellikle 2000’li yillardan sonra, Deniz Turizminin onemli bilesenlerinden yat turizmine olan ilginin artmasindan dolayi, marina sayilarinda ve kapasitelerinde artislar gozlenmektedir. Yasanan bu artislarin, hem uluslararasi hem de ulusal duzeyde rekabeti arttirici bir etkisi olmustur. Artan rekabete bagli olarak, marina isletmelerinin sunduklari hizmetlerde iyilestirme yapmalari ve hizmetler uzerinde surdurulebilirligi saglamalari ihtiyacini dogurmustur. Bunun elde edilmesinde ise, musteri odakliligin yuksek oldugu marinalarda sunulan hizmetlerin musteriler tarafindan nasil algilandiginin tespit edilmesi onemli bir rol oynamaktadir. Dolayisiyla bu calismada, marinalarin musteri portfoyunu olusturan yat sahiplerinin ve yat kaptanlarinin, yatlarini bagladiklari marinalarda kendilerine sunulan hizmetleri nasil algiladiklari olculmeye calisilmistir. Arastirmanin amacina yonelik olarak, karma arastirma yontemi secilmistir. Buna gore oncelikle, mevcut literaturdeki hizmet kalitesi degiskenleri belirlenmistir. Ardindan bu degiskenlere ek olarak, marina yoneticilerinin goruslerine de basvurulmus ve saha arastirmasinda kullanilacak nihai degiskenler tespit edilmistir. Elde edilen tum degiskenlere yonelik veriler, hazirlanan anket formu ile Izmir, Aydin ve Mugla illerinde faaliyet gosteren toplam 8 marinadan hizmet alan 134 marina musterisinden toplanarak analiz edilmistir. Saha arastirmasi sonucunda elde edilen verilerin analizlerine bagli olarak marina musterilerin hizmet algisi ortaya konmaya calisilmistir.

Numerical modelling of oil spill in New York Bay

Abstract New York Bay is one of the most important transition regions of ships trading to east America. The region plays an important role in the commerce of the New York metropolitan area. The area is surrounded with the coasts that have various levels of environmental sensitivity. The area accommodates high diversity of native ecosystems and species that are rather vulnerable in case of oil spill. Thus getting well informed about the likelihood, or fate, of oil spills around this region is of great importance so that proactive measures can be taken. The purpose of this study is to investigate the oil spill and predict the future accidents likely to be encountered around the Bay of New York. Two trajectory models have been conducted for the study. ADIOS (Automated Data Inquiry for Oil Spills), has been conducted for natural degradation calculations, and, GNOME (General NOAA Operational Modeling Environment), has been conducted for surface spread simulation. The results gained through these efforts are hoped to be useful for many organizations dealing with oil spill response operations and contribute to an effective and efficient coordination among the relevant institutions.

GEMES Project: Vocational Seamanship Training Program Supported by European Union

The aim of this review article is to introduce Project “Gemes” and to raise awareness about seafarer shortage and unemployment matter in Turkey. The Project “Gemes”, which is the Turkish acronym for “Vocational Seamanship Training for Proving Unemployed Youth Employment”, was a project partially funded by EU and successfully completed by Dokuz Eylul University in Izmir, Turkey. The Project focused on providing jobs onboard ships for a number of primary school graduates, unemployed young people between ages 18 and 24. The project mainly aims at making some contributions to the reduction of the regional unemployment in the medium and long term. Within this scope, another goal was to open up an opportunity for the work force and the employers in the region to meet and contribute to their coordination. The project was also designed to provide training program with high standards to bring up qualified employees in the maritime industry and set a model for curing the employment downfalls of the industry. In this context, it was initially intended to provide 120 beneficiaries with training and to ensure employment for a specific percentage. As planned during the preparation of the project, trainings are continued with the contribution of the infrastructure gained, for the sustainability of the project.