欢迎来到天天文库
浏览记录
ID:34111829
大小:2.43 MB
页数:7页
时间:2019-03-03
《Fuzzy inference system for the risk assessment of liquefied natural gas carriers .pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、AppliedOceanResearch31(2009)179185ContentslistsavailableatScienceDirectAppliedOceanResearchjournalhomepage:www.elsevier.com/locate/aporFuzzyinferencesystemfortheriskassessmentofliquefiednaturalgascarriersduringloading/offloadingatterminalsTarekElsayedDepartmentofMarineEngineering,ArabAcadem
2、yforScience&Technology&MaritimeTransport,Alexandria,EgyptarticleinfoabstractArticlehistory:Amultipleattributeriskassessmentapproachusingafuzzyinferencesystemisdevelopedinthiswork.Received12September2008Theapproachisbasedontheuseoffuzzysets,arulebaseandafuzzyinferenceengine.TraditionalinputRec
3、eivedinrevisedformprobabilitiesandconsequencesusedinriskassessmentarerepresentedbyfuzzysetstotakeintoaccount26May2009uncertaintiesassociatedwiththeassignmentoftheirvalues.TheoutputriskvaluescanbepresentedasAccepted14August2009crispvaluesorfuzzysetswithassociateddegreeofmembership.Thefuzzyinfe
4、rencesystemFISisusedAvailableonline8September2009asanalternativeapproachtoqualitativeriskmatrixtechniquescurrentlyusedinmanyindustriesandbyshipclassificationsocieties.Twoapproachesforfuzzyinferenceareadopted.TheseincludetheMamdaniKeywords:approachinwhichoutputriskvaluesarefuzzysetsandtheSugen
5、omethodoffuzzyinference,inwhichMultipleattributeRiskassessmentoutputriskvaluesareconstantorlinear.FuzzysetsTheuseofafuzzysetapproachisparticularlysuitedforhandlingmultipleattributeriskproblemswithFuzzyinferencesystemimprecisedata.Itimprovesuponexistingqualitativemethodsandallowstherankingofri
6、skalternativesLNGshipsbasedonaunifiedfuzzyriskindexmeasure.ResultsshowthatwhiletheMamdanimethodisintuitiveLNGterminalsandwellsuitedtohumaninput,theSugenomethodiscomputationallymoreefficientandguaranteescontinuityofthefinalriskoutputsurface.Resultsalsoshowthatcomputedriskvaluesusingafuzzyriski
7、ndexmeasureareconsistentwiththoseobtainedusingaqualitativeriskmatrixapproach.Theproposedmethodologyisalsoapplicabletoothershipoperatingmodessuchastransitinopenseaand/orentering/leavingport.AcasestudyforaliquefiednaturalgasLNGshiploading/offlo
此文档下载收益归作者所有