انتخاب نوع کشتی از طریق یک روش یکپارچه VAHP-ANP برای حمل و نقل عمومی با سرعت بالا در بسفر
|کد مقاله||سال انتشار||مقاله انگلیسی||ترجمه فارسی||تعداد کلمات|
|6140||2010||8 صفحه PDF||سفارش دهید||4498 کلمه|
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Expert Systems with Applications, Volume 37, Issue 6, June 2010, Pages 4182–4189
The transportation planning phases are generally examined in three groups, according to their contents, constant and variable factors, time dimensions, financial costs and decision-making levels: Strategic, tactical and operational levels. Network design and development, terminal capacity and location determination, marketplace selection and vessel fleet and working-power planning are problems of strategic level planning. We are interested in sea vessel type selection to efficient vessel fleet planning in this study. This paper deals with issues related to the selection of right sea vessel type for short and medium distances in Bosphorus and proposes an integrated methodology for this process.
Transportation via seaway is one of the most important industrial dynamics by following a continuous development trend from the design of the first commercial ship to present. Turkey’s surrounded by Aegean, Black and Mediterranean Seas and 40% of all provinces have coastlines. For this reason, in Turkey, sea transportation for passengers and goods is very important, especially in big and crowded cities as İstanbul. The similar circumstances are valid in İstanbul with Turkey generally and 90% road, 6% railroad and 4% seaway are made use the inner-city transportation (IMM, 2002 and SPO, 2001). In such a case, there are major complications in terms of economical and social dimensions because of the little share of seaway in cargo and passenger transportation while Turkey is surrounded by sea on north, west and south. İstanbul, Turkey’s largest city, plays a vital role in internal and external trade. It is also the cultural and educational center of the country. One of the fundamental problems of İstanbul is traffic congestion (Ulengin, Topcu, & Sahin, 2001). It is very important and immediate to switch the transportation to seaway in terms of country economy, safety transportation and environmental pollution (IMM, 2002 and SPO, 2001). Making the right decision is always a difficult task for the purchasing manager. The alternatives have varied strengths and weaknesses which require careful assessment by the purchasers before ranking can be given to them. So, every decision needs to be integrated by trading off performances of different alternatives at each stage. Here, the focus of the problem is “alternatives ranking and selecting”. The sea vessel types can be summarized as boats, ships, ocean liners, sea buses, steamships, canoes, cruise ships, steam boats, sailing ships, sail boats, motorboats, and others. We will examine sea buses, steamships, motorboats and boats’ efficiencies from these sea vessel types under economic view and choose the most suitable sea vessels in different transportation distances for high-speed passenger transportation in Bosphorus. Turkish Maritime Corp. (TMC) (is bought by ISB at the year of 2005), İstanbul Sea Buses Corp. (ISB), and several private and public organisations are responsible from passenger and vehicle transportation in Bosphorus. Our research comprises and concerns all these organisations.
نتیجه گیری انگلیسی
We aim this paper shall lead on choosing the most suitable sea vessel type for efficient vessel fleet planning by considering short and medium distances in Bosphorus. Consequently a realistic, applicable and relatively objective methodology is proposed and by this methodology VAHP and ANP methods are integrated to benefit their advantages and eliminate their disadvantages. As a further research, long distance transportation in Bosphorus can be incorporated to the research. Hence the changes in results and rankings can be observed by the change of sea characteristics considering long distances. Also in the future, the expert votes and/or scores can be fuzzified because of the fuzzy nature of the problem.