简介:一个适应neuro模糊的推理系统(ANFIS)被介绍预言横梁的动态行为。轴的力量和大排水量的效果在分析被考虑。为横梁的动态特征的测试的一个数据库从试验性的测试被开发。为单个、多重步的横梁的非线性的颤动力量的回答从有限元素方法被计算(女性),为比较的试验性的测试和neuro模糊的模型。neuro模糊的模型为神经网络和模糊逻辑的联合提供一个一般框架。它与合并真实世界的系统的模糊性质的更多的选择是更灵活的并且是为横梁的动态特征的一个有用评价工具。因此,ANFIS能是为受到轴的负担和大排水量的多重步的横梁的动态行为分析的一个有用工具。
简介:Inroughsettheory,crispand/orfuzzybinaryrelationsplayanimportantroleinbothconstructiveandaxiomaticconsiderationsofvariousgeneralizedroughsets.Thispaperconsiderstheuniquenessproblemofthe(fuzzy)relationinsomegeneralizedroughsetmodel.Ourresultsshowthatbyusingtheaxiomaticapproach,the(fuzzy)relationdeterminedby(fuzzy)approximationoperatorsisuniqueinsome(fuzzy)double-universemodel.
简介:伪狂犬病(Pseudorabies,PR)是由孢疹病毒科的伪狂犬病毒(PseudorabiesVirus,PRV)引起家畜和多种野生动物共患病的一种急性传染病。该病最早发现于美国,后来由匈牙利科学家首先分离出病毒。临床上以发热、奇痒以及脑脊髓炎为特征。猪是本病毒的自然畜主,妊娠母猪繁殖障碍,初生仔猪出现神经症状,育肥猪出现呼吸道症状、生长不良等。公猪精液质量下降,给养殖业造成严重的经济损失。该病近几年在我县的猪群中一直存在,严重制约着我县生猪的健康发展。去年秋季到今年春季,我县多个乡镇的养殖户反映饲养的犬在吃过该病死猪后,口吐白沫,抽搐死亡。
简介:Environmentalriskspertainingtocontaminatedsoilshavebeenwellstudied,whilelittleattentionhasbeenpaidtotherisksofthesoilsafterremediation.Inthisstudy,aconceptmodeldevelopedbasedonfuzzysettheorywasappliedtoevaluatetheuncertaintiesofthreeriskindicators,namely,plantgrowth,groundwatersafetyandhumanhealth,ofarestoredsitethathadbeenpreviouslypollutedbyheavymetals.Theconceptmodelclassifiedthegradeandimportanceofriskfactorsbyan11-levelrankingsystemandwasabletoyieldacomprehensiveriskresultratherthanmulti-riskresultsforcomplexriskindicators.Modelingresultsshowedthattheriskstothethreeindicatorswereeffectivelyreducedaftertheremediation.Moreover,greatsensitivityoftheriskswasfoundrelatedtotheweightdistributionamongthethreeriskindicators.Ingeneral,therisksofbothpollutedandrestoredsoilstotheenvironmentwereintheorderofgroundwatersafety>plantgrowth>humanhealth.Themodelwasprovedtosolvetheproblemsofmulti-riskresultsduetocomplexriskindicatorsthatpreviouslyencounteredbyotherresearchers,whichmadeithelpfulindecision-makingandmanagementofrestoredsoils.
简介:Byreviewingthetraditionalmeasuremethodsoftheintegrationdegreeofthetourismindustry,weconcludedthatmeasuremethodsoftheintegrationdegreeofthetourismindustrycanonlybelimitedtothelevelsoftheoreticalanalysisduetothedefectofthestatisticaldataandthestatisticalstructure.Withthehelpofconceptoffusionfieldandfusionentropyofthetourismindustry,aphysicalmodelofintegrationofthetourismindustryisestablishedandindexsystembasedonAHPisproposed.UsingAHP-fuzzycomprehensiveevaluationmethod,theintegrationdegreeofJiangsuandthecountry’stourismindustryarestudied.Theinfluencingfactorsareanalyzedandthecorrespondingcountermeasuresareproposed.
简介:Regardforthefuzzinessandtherandomnessinsomeacousticfields,amethodforthenumericalanalysisofthe2DacousticfieldwithFuzzy-Randomparameterswasproposedbasedontheequivalentconversionofinformationentropy.Intheproposedmethod,afuzzyrandomacousticfieldwastreatedasapurefuzzyacousticfieldorapurerandomacousticfieldbytransformingallthevariablesintofuzzyvariablesorrandomvariables.Perturbationfiniteelementmethodsforanalyzingthetwo-dimensionalacousticfuzzyandrandomfieldarededuced.Thesoundpressureresponseofa2Dacoustictubeandthe2Dacousticcavityofacarwithfuzzy-randomparameterswereanalyzedbytheproposedmethodandtheMonteCarlomethod,theresultsshowthattheproposedmethodcanbewellappliedtothenumericalanalysisofthe2Dacousticfieldwithfuzzy-randomparameters,andhasgoodprospectofengineeringapplication.