Browse > Article
http://dx.doi.org/10.5394/KINPR.2011.35.2.173

Analysis of Economic Lifespan for Replacement Policy of Container Ship using Fuzzy Interval Numbers  

Jang, Woon-Jae (Maritime Safety Research Center, Korea Ship safety Technology Authority)
Abstract
This study determined the ship replacement life expectancy from an economic perspective. There are many ambiguities in the cost for calculation of economic lifespan, and these were expressed as fuzzy numbers. Also, a fuzzy cost model using fuzzy numbers was developed and suggested as a more practical analysis method than the existing cost model. And the suggested fuzzy model was used to determine the economic lifespan for various types of container ships. As the result, Without fuzziness, the economic lifespan of 5000 TEU Ships was found to be 19 years. it was found that the greater the container ship, the greater the economic lifespan was.
Keywords
Economical replacement policy; Fuzzy number; Existing cost model; Fuzzy cost model; Economic lifespan;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Bae,E.H., Kim,K.M., Shin,C.H., Kim,D.H., Park,Y,K. (2010), The Analysis of Distribution Characteristic on the Operation Cost for Respective Transport Volumeand Travel Speed of New Transit System Bi-Modal Tram, Proceeding of The Korean Society for Railway Conference, pp. 2297-2302.
2 Chang,P.T.(2005), Fuzzy strategic replacement analysis, European Journal of Operational Research 160, pp. 532–559.   DOI   ScienceOn
3 Kang,I.J., Lee,J.S.(2002), Highway Maintenance Cost Optimization Using GSIS, Korean Society of surveying, Vol. 20, No. 4, pp. 367-374   과학기술학회마을
4 Kim,T.H., Kim,S.G.(1999), Dynamic Programming Model for Determining Optimal Replacement Policy for a Problem with Multiple Challengers, Proceeding ofJournal of the Korean Operations Research and Management Science Society Conference, p. 583.
5 Park,D.J., Kim,H., Nam,K.C.(2006), An Empirical Study on the Economic Benefit of Space Chartering , Journal of Korean Navigation and Port Research, Vol. 30, No.80, pp. 663-668.   과학기술학회마을   DOI   ScienceOn
6 Terborgh, G.(1949), Dynamic Equipment Policy,McGraw-Hill, New York.
7 Terborgh, G.(1958), Business Investment Policy, Machinery and Allied Products Institute, Washington,DC.