A Study on the Optimal Non-Queuing Pricing Model for Trampers Queuing at the General Anchorage under the Condition of Sharable Berths for Loading and Unloading

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Project title

Code/計畫編號

MOST103-2410-H019-019

Translated Name/計畫中文名

可共用船席裝卸的條件下外港錨區不定期船零等候最佳收費模式之研究

Project Coordinator/計畫主持人

Chen-Hsiu Laih

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Merchant Marine

Website

https://www.grb.gov.tw/search/planDetail?id=8321704

Year

2014

Start date/計畫起

01-08-2014

Expected Completion/計畫迄

31-07-2015

Bugetid/研究經費

658千元

ResearchField/研究領域

交通運輸
管理科學

"不定期船因船期與航線不固定，故在目的港外錨區排隊等候進港裝卸的情況頗為常見。本研究將採等候定價的方式分散不定期船到達時刻，以消除其在外港錨區排隊等候的現象。在等候定價相關研究中，排隊等候時間長度是計算均衡成本與推導最佳收費的重要關鍵。但目前有關不定期船等候定價文獻中，對於排隊等候時間長度模式之建構，僅考慮各不同類型不定期船各有其裝卸專用船席，未考慮某些類型不定期船可共用其他類型不定期船船席裝卸的港埠作業習慣。根據高雄港務公司的數據顯示，可共用船席裝卸的不定期船來船數，高達不定期船總來船數的 40%，國內其他港口的比例甚至更高，故有必要修正既有文獻的模式建構以貼近實務。本研究考慮某些類型不定期船可共用其他類型不定期船船席裝卸的前提下，建構不定期船在外港錨區排隊等候時間長度模式，據此推導零等候最佳收費架構以及評估收費實施後之成效。本研究涵蓋三個重要模式之建構，第一為建構可共用及不可共用船席裝卸貨物的不定期船等候進港時間長度模式。第二為應用層級分析法，建構上述兩類不定期船等候進港時間長度的對應權重模式，據此算出不定期船在外港錨區排隊等候的時間長度。第三為根據均衡成本守恆的原則，建構排隊等候進港不定期船之均衡成本、零等候最佳收費以及收費實施後到達分散之模式。以上是目前相關文獻尚未涉及之部分，故本研究成果將使不定期船在外港錨區的等候定價模式更加完備且更具實務參考價值。 ""Trampers have no regular sailing schedule and route, so they have to queue at the general anchorage frequently for available berths to load/unload cargos. This research is going to execute a queuing pricing policy for a busy port to eliminate the tramper’s queuing time spent at the general anchorage. In the current literatures of queuing pricing model for trampers, the total length of queuing time at the general anchorage is the crucial key point to calculate the equilibrium cost and derive the optimal toll scheme. These literatures consider that all different types of trampers have their own specific berths to load/unload cargos. However, this consideration ignored that some types of trampers can also use other types of trampers’ specific berths to load/unload cargos in practice. According to Kaohsiung harbor’s data, the number of these types of trampers is nearly 40% of all arrived trampers, and other international ports in Taiwan are even higher than 40%. In order to improve the current queuing pricing model for practice, this research develops the model of total length of queuing time at the general anchorage under the condition that some types of trampers can also use other types of trampers’ specific berths to load/unload cargos. According to this model, this research also derives the optimal queuing toll scheme and the result of dispersing all trampers’ arrival time after implementing the toll collection. This research develops three important models. The first is the model of different lengths of queuing time for trampers can and cannot use other trampers’ specific berths to load/unload cargos. The second is the model of different weights of the lengths of queuing time for the two kinds of trampers that can and cannot use other trampers’ specific berths. The second model is developed by Analytic Hierarchy Process. The above two models constitute the model of total length of queuing time for all queuing trampers at the general anchorage. The third is the model of equilibrium cost, optimal non-queuing toll scheme and dispersing arrival time for all trampers after implementing the toll scheme. The third model is developed based on the principle that the equilibrium cost must be constant over time. The above descriptions have not yet been discussed in the current literatures. The fruitful results of this research will be expectable to make the queuing pricing theory become more complete and practical. "

Keyword(s)

不定期船
外港錨區
等候定價
均衡成本
零等候最佳收費
Tramper
General anchorage
Queuing pricing
Equilibrium cost
Optimal non-queuing toll scheme

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A Study on the Optimal Non-Queuing Pricing Model for Trampers Queuing at the General Anchorage under the Condition of Sharable Berths for Loading and Unloading

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