Based On The Theory Of Fuzzy Comprehensive Evaluation Ballast Water Treatment System Selection

It is required in 《International Convention for the Control and Management of Ships Ballast Water & Sediments》that certain portion of new ships to be made in 2009 and all the new ships to be built in 2016 should conform with the D-2 Standard. Therefore, ships should be equipped with ballast water treatment systems which are approved and certificated. This paper aims to discuss the issues concerning the selection of the shipping ballast water treatment system.The paper first elaborates on the environmental problems caused by the harmful creatures in the ballast water and then introduces the impacts of the ballast water convention on China while comparing the several methods dealing with ballast water that are either being used or under research.After that, the paper makes an introduction of the approved criteria and procedures of ballast water treatment system and ascertain the selection of evaluation guidelines. Based on the analysis of the principles, evidence and influential factors, I have established an evaluation guideline system in my paper for the selection of ballast water treatment system. In writing this paper, I have gone through quite an amount of related previous literature and selected the most representative "Fuzzy Comprehensive Evaluation" to help us choose the best scheme, which is to apply hierarchical analysis method in the multi-level fuzzy comprehensive evaluation model. Thus, a mathematical model for ballast water treatment system selection has been established.Finally, this paper takes PowerBuilder 9.0 as its developing language and applies SQL Server 2000 in the development of database. All these help to implement the main functions such as intelligent decision-making, expert marking, information...