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Öğe Future Berth Requirements Of Izmir Container Port(Beykent Üniversitesi, 2008) Eren, Adem; Gokkus, UmitQueuing modeling is frequently used for optimizing the number of berths in a port by considering annual data on time series of container traffic. In this study, the modeling process covers the couple-year data and future forecasts of ship and cargo traffic. Future requirements of berths are also determined according to the assumption based on using the same queuing model which can simulate the results of macro and micro projection on port traffic. Queue model selection plays an important role in determining the number of berths. For the optimization process, the mathematical model should be supported by the cost model proposed. Here, the total cost composed of cost of vacant berths and cost of ships waiting in queue should be minimized. Cost of service from loading and unloading operations maintained at berths and cost of investment are constant for the considered working period in a port and do not change with the number of berths. Therefore, these costs are not added to the total cost. The future requirements of berths are assigned by the queuing model supporting the ship forecasts resulting from the macro and micro projection. The proposed model is managed in the case study on Izmir Port which is the biggest commercial port of Aegean Region in Turkey. The congestion problems of this port are solved by determining its future extension.Öğe Future Storage Area Requirements for Sustainability of Izmir Container Port(Beykent Üniversitesi, 2009) Canivar, Dogan; Gokkus, Umit; Eren, AdemInventory method is well known in management and econometrics. But in port planning, it is rarely used because of yielding roughly the solution resulting from assuming average holding days of containers at yard and one-day data representing whole days in a month. In this study, the inventory model is utilized for future storage requirements of Izmir port. Especially in city ports, the size of storage area needed affects directly the city traffic and planning. This study gives the general information whether the size of storage area required for future extension of port is adequate for the allowed development area in land side of port. The exact solution can be found by using complicated mathematical modeling and simulation. In this study, especially the inventory and cost model are processed for present values of container statistics. The similar process is maintained in order to determine the future storage area of Izmir port. Even though the limited data is analyzed, the reasonable solutions are obtained by assuming some parameters such as storage days and forecasting results. For three- five-year planning terms, the inventory and cost model is utilized for future extension of storage area existing in Izmir port.