简介:Theanalytichierarchyprocess(AHP)isusedwidelyforanalyzingdecisionsmadeinvariousreal-worldapplications.Itsbasicideaistoconstructahierarchyofconceptsencounteredinagivendecisionproblemandtochoosethebestalternativeaccordingtopairwisecomparisonmatricesgivenbythedecisionmaker.Undertheassumptionoffullyrationaleconomics,areasonabledecisionshouldbeconsistent.Itbecomesanimportantissueonhowtoanalyzeandensuretheconsistencyofcomparisonmatricestogetherwiththejudgmentsofthedecisionmaker.Themainobjectivesofthepresentpaperarethreefold.First,wereviewthebasicideaandmethodsusedtodefinetheconsistencyandthetransitivityofmultiplicativereciprocalmatrices,additivereciprocalmatricesandcomparisonmatriceswithfuzzyintervalandtriangularfuzzynumbers.TheexistingcontroversybehindtheapplicationsoffuzzysettheorytotheAHPintheliteratureispresented.Second,theconsistencyofthecollectivecomparisonmatricesingroupdecisionmakingbasedonAHPandfuzzyAHPisfurtheranalyzed.WepointoutthattheweakconsistencyofpreferencerelationswithfuzzynumbersinfuzzyAHPandgroupdecisionmakingshouldbeinvestigatedcomprehensively.Third,undertheconsiderationofthevaguenessintheprocessofevaluatingthejudgements,anewconceptoffuzzyconsistencyofcomparisonmatricesintheAHPisgiven.
简介:Inthispaper,weanalyzethefuzzyreliabilityofparalleling-seriessystem,focusingonthesituationoftheearlyfailuremode.TheearlyfailuremodeoffuzzyreliabilitymainlyobeystheWeibulldistribution.Basedonthis,weobtainthedistributionfunction,densityfunction,failurefunction,reliabilityfunctionandtheformulaofthemeantimetofailure.Fortheparalleling-seriessystemcomposedofmultiplecomponents,C1j,C2j,Cnj…,Cnj(j=1,2,…,K),especiallywhenη=1,mij=m,i=1,…n,j=1,2,…,k,wealsoobtainthecorrespondingformulas.Finally,weciteanexampletoverifytheformulaanddeepentheunderstanding.
简介:Thispaperpresentsaweb-basedsystemtopredicttheelectricityprices.Theproposedsystemcapturesthegeographicallocation,weatherforecast,andoilpriceforoneweekahead.Thecapturedparametersarefedtoafuzzy-logic-basedalgorithmtocalculateelectricenergyprices.Basedonpredictedelectricityprices,consumerscanturnON/OFForrescheduleoperationsoftheirhomeappliancestoreducetheirelectricitybill.Theproposedalgorithmwasdevelopedandhostedinautilityserver(U-server).Ontheconsumerside,ahomegateway(H-gateway),andamonitoringandcontrolsystemwasdesigned,built,andtestedbyusingasinglechipmicrocontroller.
简介:Inthispaper,acryosurgery-hyperthermiasystemisproposedfortakingadvantageofthealternatedcoolingandheatingtreatmentintumor.Anovelcontrolsystemisproposedtoensurethatthethermalsystemworkseffectively.Firstly,thetissuetemperaturearoundtheprobeisregulatedandkeptinadesiredrangewhenradiofrequencyablationisoperated.Secondly,precisecontroloftemperatureisachievedinhyperthermiatreatmentusingfuzzylogicPIDtypecontroller.Theresultsofexvivoliverexperimentdemonstratethatthissystemcouldprovidearathergoodperformancewiththeproposedcontrolmethod.
简介:文章引入了(L,M)-fuzzy层次拓扑空间范畴,讨论了它与L-fuzzy层次拓扑空间范畴的关系,证明了(L,M)-fuzzy层次拓扑空间范畴、(L,M)-fuzzy层次邻域空间范畴、(L,M)-fuzzy层次闭包空间范畴以及(L,M)-fuzzy层次内部空间范畴等均是等价的。
简介:四(1)班要评选十月份的'数学智多星'了。老师打开电脑,给大家出示了这样一道智力趣味题:趣味数学城有一幢四层楼房(如右图),每个窗户的4块玻璃分别涂上粉色和白色,每个窗户代表一个数字。每层楼有3个窗户,从左往右代表一个三位数。四个楼层表示的三位数有:275、791、362、612。请你猜一猜,第三层楼表示哪个三位数?爱动脑筋的淘淘仔细地看了这四个三位数,发现'2'出现最
简介:烃未来的地区是在被估计生产油的一座水库的某个层。地质学家使用质的分析方法发现前景层。研究使用了三个模糊会员函数和模糊逻辑的八条规则建模的五个变量。规则在工作系统引起感觉迟钝。这研究被用36条规则为每输入变量建模进不同模型因此进行。它试图决定烃的存在通过在用有Mamdani的模糊推理系统的一座水库的质的分析的未来的地区方法。数据在水库X从井日志数据被拿。在做这研究有一些步骤,包括fuzzification,推理系统,和defuzzification。结果与97.7%精确性在水库X从3000层显示出99前景层。
简介:双犹豫的模糊集合(DHFS)是由二部分组成的模糊集合(FS)的新归纳(即,会员迟疑功能和非会员迟疑工作),它面对显示认识的度的几不同可能的价值是否必然或无常。它包含模糊集合(FS),intuitionistic模糊集合(IFS),和犹豫的模糊集合(HFS)以便它能在决策的过程更灵活地处理不明确的信息。在这份报纸,我们基于爱因斯坦t-conorm和t标准在双犹豫的模糊集合上建议一些新操作,学习他们的性质和关系然后给一些双犹豫的模糊聚集操作员,它能被看作一些存在的归纳在下面模糊,intuitionistic模糊、犹豫的模糊环境。最后,在双犹豫的模糊环境下面的一个决策算法基于建议聚集操作员被给,一个数字例子被用来表明方法的有效性。
简介:DearEditor,WereadwithinteresttherecentlypublishedstudybyTriguerosetal~([1]),highlightingthefinancialandmanagementconditionsoffemtosecondlaser-assistedcataractsurgery(FLACS).Theauthorsderivedasimulationtoestimate
简介:教学目标1.在数与形之间建立联系,发现规律,并会应用规律提高计算技能。2.经历探索的过程,体会数形结合的基本数学思想。3.感受数学的美和趣味性,培养乐于探索的精神。学习者分析小学生思维的抽象程度还不够高,数学学习中经常需要借助'形'来帮助理解,他们从中能够感悟到'形'可使复杂的问题变得更简单、使抽象的问题变得更直观。但学生较少有意识地将数与形结合起来思考问题,缺乏相关的数学活动经验。