简介：题目:设D是锐角△ABC内部一点,使∠ADB=∠ACB+90°、且AC·BD=AD·BC。计算比值(AB·CD)/(AC·BD)。

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简介：ThispaperdiscussestheseismicactivityinBeijingMunicipalityanditsadjacentareas(whicharereferredtoastheBeijingregioninthepaper).Byusingfuzzymathematics,thefactorscontrollingregionalcrustalstabilityaretransformedintofuzzyinformationandthenamodeloffuzzydiagnosisisestablished.AfuzzycomprehensiveevaluationofregionalcrustalstabilityintheBeijingregionismadeaccordingtotheseismicandgeologicalconditionsoftheregion.

简介：Onthebasisoftheresearchofthecartographicmodelsmadebytheauthorssomeyearsago,thispaperfurtherstudiestheestablishmentofcartographicfuzzymatrixtomaketheconceptsincartographye.g.,selection,deletion,mappinggeneralizationandimagetranformation,intosomeprecisemathematicalexpressions.

简介：Inthispaper,theautocontrolofthesimulationdeviceofsystematiccirculatorysystemwillbepresented.Thepressureandcardiacoutputofsimulationsystemwillbeadjustedtopredeterminatevalueinphysiologicalarea.Thispaperisbasedonfullyunderstandingofphysicalsimulatorytheoriesanddevicedesignofhumancardiovas-cularsystemandthebasicspecificpropertiesofsimulationsystem.Non-linearityexsitsinthissystem,anditisamulti-inputandmulti-outputsystem.Inthemean-time,simulativesystemhasspecialpropertyoftime-lagandtime-variant.Theideaof

简介：Fuzzycontrolproblemsforsystemswithboundeduncertaindelayswerestudied.BasedonLyapunovstabilitytheoryandmatrixtheory,anonlinearstatefeedbackfuzzycontrollerwasdesignedbylinearmatrixinequalities(LMI)approach,andtheglobalexponentialstabilityoftheclosed-loopsystemwasstrictlyproved.Forafuzzycontrolsystemwithboundeduncertaindelays,undertheglobalexponentialstabilityconditionwhichisreducedtoplinearmatrixinequalities,thecontrollerguaranteesstabilityperformancesofstatevariables.Finally,thesimulationshowsthevalidityofthemethodinthispaper.

简介：ＦｕｚｙＬｏｇｉｃＢａｓｅｄＥｖｏｌｖｉｎｇＳｙｓｔｅｍａｎｄＯｎｅＫｉｎｄｏｆＣｏｍｐｅｔｉｔｉｏｎＭｅｃｈａｎｉｓｍＺｈｏｎｇｘｉｏｎｇ，ＨｕＷａｎｊｕｎ＆ＰｅｎｇＦｅｉＡｕｔｏｍａｔｉｏｎＳｙｓｔｅｍＩｎｓｔｉｔｕｔｅ，ＮｏｒｔｈｅｒｎＪｉａｏ...

简介：文章定义了加强的弱L—fuzzyHausdorff空间。讨论了SRHausdorff空间与其他分离性的关系，给出了它的等价刻画，讨论了SRHausdorff分离性的一系列性质。证明了SRHausdorff分离性是可遗传的、弱同胚不变的、L—好的推广性质，并且具有可乘性。

简介：ThenotionofafuzzyretractwasintroducedbyRodabaugh(1981).Thenotionofafuzzypairwiseretractwasintroducedin2001.Someweakformsandsomestrongformsofα-continuousmappingswereintroducedin1988and1997.TheauthorsextendsomeoftheseformstotheL-fuzzybitopologicalsettingandconstructvariousα-fuzzypairwiseretracts.TheconceptofweaklyinducedspacesinthecaseL=[0,1]wasintroducedbyMartin(1980).LinandLuo(1987)generalizedthisnotiontothecasethatLisanarbitraryF-latticeandintroducedthenotionofinducedL-fts.Severalresultsareobtained,especially,forL-valuedpairwisestratificationspaces.

简介：研究幂零Fuzzy方阵的特征，给出了一个Fuzzy方阵是幂零的充要条件，为判别某——Fuzzy方阵的幂零性提供了一种行之有效的方法。

简介：体育教学技术评定中,技术评定结果要求客观、准确地反映实际情况。把Fuzzy综合评判方法应用于乒乓球技术教学技评过程,能较大程度地减少主观因素影响,评判结果符合实际情况。

简介：Intheautomationofidentificationoflandscapefeaturesthevaguenessarisesfromthefactthattheattributesandparametersthatmakeupalandscapevaryoverspaceandscale.Inmostofexistingstudies,thesetwokindsofvaguenessarestudiedseparately.Thispaperinvestigatestheircombinationinidentificationofcoastlandscapeunits.Fuzzysettheoryisusedtodescribethevaguenessofgeomorphicfeaturesduetothecontinuityinspace.Thevaguenessresultedfromthescaleofmeasurementisevaluatedbystatisticindicators.Thedifferencesoffuzzyobjectsderivedfromdataatdifferingresolutions(insizefrom3×3cellsto25×25cells)arestudiedinordertoexaminethesehigher-orderuncertainties.

简介：Theevaluationmethodanditsaccuracyforevaluatingcomplexsystemsareconsidered.Inordertoevaluateaccuratelycomplexsystems,theexistedevaluatingmethodsaresimplyanalyzed,andanewcomprehensiveevaluatingmethodisdeveloped.ThenewmethodisintegrationofDelphiapproach,analytichierarchyprocess,grayinterconnectdegreeandfuzzyevaluation(DHGF).Itstheoryfoundationisthemeta-synthesismethodologyfromqualitativeanalysistoquantitativeanalysis.Accordingtofuzzysetapproach,usingthemethodsofconcordanceofevaluation,redundantverify,doublemodelsredundant,andlimitationsofthemethodetc,theaccuracyofevaluatingmethodofDHGFisestimated,andapracticalexampleisgiven.Theresultshowsthatusingthemethodtoevaluatecomplexsystemprojectsisfeasibleandcredible.

简介：文章修正和补充了现代英语名词不规则复数形式的构成。

简介：Inthispaperthroughthecomprehensiveanalysisofthefactorsofenterprises'SCMperformance,thetargetsystemofenterprises'SCMperformanceevaluationisestablishedandthemethodoffuzzymultiplecomprehensiveevaluationisproposed.ThismethodconvertsthecomplicatedproblemsofSCMintoaquantitativeevaluationtargetbyusingfuzzysyntheticoperationsothatitcanevaluateenterprises'SCMperformancemorescientificallyandguideenterprises'SCMtoworkwell.

简介：Basedonthetheoryoffuzzylogic,themethodofobfuscatingcoefficientandreliabilitytofusetheinformationofhandgeometryandpalmprintsforidentitydiscriminationisproposed.Theexperimentprovesthatthemethodisusefulandeffective.Itsidentificationrateisupto90%,whichis20%-30%higherthanthatofusinghandgeometryorpalmprintssingly,thusitcanbewidelyusedinhighlydemandedsecurityfield,suchasfinance,entranceguard,etc.

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简介：Intheprocessofconceptdesignoffshoreplatforms,itisnecessarytoselectthebestfromfeasiblealternativesthroughcomparisonandfiltering.Fuzzyoptimalselectioninmultiplestagesisanusefulmethodinengineeringdecisionmaking,hutinsomecases,itisdifficulttomakeadistinctionbetweenthefirstalternativeandthesecond.Thereforeitisnecessarytoimprovethefuzzyoptimalselectionmethodwithmultiplestages.Inthispaper,usingfuzzycrossiterationoptimalmodeling,theweightsensitivityanalysisismadefirstly.Thenaseconddecision-makingmethodtosolvefuzzyoptimalproblemsisproposed.Itsbasicprincipleistheinversereasoninginmathematics.Thismethodexpandstheappliedrangeoffuzzyoptimalselection.Finallythismethodisusedintheconceptdesignofoffshoreplatform.Acasestudyshowsthatthismethodisscientific,reasonableandeasytouseinpractice.

简介：AMultimediastreamsdynamicratecontrolalgorithmbasedonFuzzyadaptivePID(MFPID)hasbeenproposedtoimplementmultimediastreams'endsendingrateon-lineself-regulatingandsmoothing,andtotracksystemresourcesintime,sothatitcanavoidsystem'sregulatingoscillationandguaranteesystem'sstability.And,someworkhasbeendonetoanalyzeadaptivesessionmodelofmultimediastreams,toimplementfutureavailablebandwidthestimationofIPnetwork,toachievePIDparameters'on-lineself-tuningbyfuzzycontrolling.SimulationvalidatedthetheoreticalresultsofMFPID.

简介：在水下目标识别是在声学的面对的一种关键技术并且在水下防卫。在这篇文章，一个识别系统基于模糊逻辑推理(可播放的动画文件)被建立。这个系统主要由三部分组成：模糊输入模块，有一套推理规则的模糊逻辑推理模块和de模糊的产量模块。Theinference结果证明识别系统处于大多数条件是有效的。