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简介：Ageneralizedmathematicalmodelofhumanbodycurrentthresholdforperceptionwasestablishedandthecurrentflowingthroughhumanbodycouldbearbitrarycyclicalwaveforms.Therelationshipbetweenhumanbodycurrentthresholdforperceptionandcurrentfrequency,truerootmeansquare(RMS)valueandinfluencefactorwasdescribed.Atestsystemwasestablishedbasedonelectroencephalogram(EEG)tostudytherelationshipbetweenhumanbodycurrentthresholdforperceptionandcurrentwaveform,frequency...

简介：Inahybridsystem,thesubsystemswithdiscretedynamicsplayacentralroleinahybridsystem.Inthecourseofengineeringmachineryofclusterconstruction,thediscretecontrollawishardtoobtainbecausetheconstructionenvironmentiscomplexandthereexistmanyaffectingfactors.Inthispaper,hierarchicallyintelligentcontrol,expertcontrolandfuzzycontrolareintroducedintothediscretesubsystemsofengineeringmachineryofclusterhybridsystem,soastorebuildthehybridsystemandmakethediscretecontrollaweasilyandeffectivelyobtained.Thestructures,reasoningmechanismandarithmeticofintelligentcontrolarereplantedtodiscretedynamic,conti-nuousprocessandtheinterfaceofthehybridsystem.Thestructuresofthreetypesofintelligenthybridsystemarepresentedandthehumanexperiencessummarizedfromengineeringmachineryofclusteraretakenintoaccount.

简介：Themethodologyofvisualsimulationforatunnelengineeringconstructionscheduleispresented.Visualizationofsimulationmodel,calculationandresultofconstructionschedulesimulationisrealized,andtheconstructionsimulationandtheresourceoptimizationoftunnelengineeringaremade.Ariskanalysisandadecision-makingmethodoftunnelengineeringconstructionschedulebasedonvisualsimulationarepresented.Furthermore,usingScurvetheoryandschedulemanagementmethod,thereal-timemanagementandcontrolmethodoftunnelengineeringconstructionbasedonvisualsimulationispresented.Theapplicationtothetunnelengineeringconstructionscheduleanalysisandmanagementshowsthefeasibilityandeffectivenessofthemethodpresentedinthispaper.

简介：Gaitrecognitionisthekeyquestionoffunctionalelectricalstimulation(FES)systemcontrolforparaplegicwalking.Anewrisk-tendency-graph(RTG)methodwasproposedtorecognizethestabilityinformationinFES-assistedwalkinggait.Themaininstrumentwasaspecializedwalkerdynamometersystembasedonamulti-channelstrain-gaugebridgenetworkfixedonthewalkerframe.Duringwalkingprocess,thissystemcollectedthereactionforcesbetweenpatient'supperextremitiesandwalkerandconvertedthemintoRTGmorphologiccurvesofdynamicgaitstabilityintemporalandspatialdomains.TodemonstratethepotentialusefulnessofRTG,preliminaryclinicaltrialsweredonewithparaplegicpatients.Thegaitstabilitylevelsoftwowalkingcaseswith4-and12-weekFEStrainingfromonesubjectwerequantified(0.43and0.19)fromtheresultsoftemporalandspatialRTG.Relevantinstablephasesingaitcycleanddangerousinclinationsofpatient'sbodyduringwalkingprocesswerealsobroughtforward.Inconclusion,thenewRTGmethodispracticalfordistinguishingmoreusefulgaitstabilityinformationforFESsystemcontrol.

简介：Theidentificationofthecriticalinfrastructurehasshownthatthebuildcivilengineeringinfrastructureisalmostinvolvedeverywhere,evenwiththeIT-infrastructure.Therefore,thepassivesafetyofstructuresisdemanded.Securityassociationshaveanalysedthatmostassaultscamealongwithexplosionandimpactscenarios,whichamountin80%ofassaults.Consequently,thesearetheextraordinaryloadsthestructureshavetobeplannedanddesignedfor.Tocarryoutsuchanengineeringjob,theengineerhastobeeducatedinmultipledisciplinesasphysics,materialscience,continuummechanics,numericalmechanics,testing,structuralengineeringandrelatedspecificfieldsaswavepropagationetc.Inthispaperwewillconcentrateonthesubjectsofnumericalsimulationandtesting.

简介：Effectivelyandaccuratelymodellingthespatialrelationoffracturesurfacesiscrucialinthedesignandconstructionoflargehydropowerdamshavingacomplexunderlyinggeology.However,fracturesurfacesarerandomlyformedandvarygreatlywithrespecttotheirspatialdistribution,whichmakestheconstructionofaccurate3-Dmodelschallenging.Inthisstudy,weuseanoptimalMonteCarlosimulationanddynamicconditioningtoconstructafracturenetworkmodel.WefoundtheoptimalMonteCarlosimulationtoeffectivelyreducetheerrorassociatedwiththeMonteCarlomethodandusedynamicconditioningtoensuretheconsistencyofthemodelwiththeactualdistributionoffracturesontheexcavationfacesandoutcrops.WeappliedthisnovelapproachtoahydropowerstationontheJinshajiangRiver,China.Thesimulationresultsmatchedtherealsampledvalueswell,confirmingthatthemodeliscapableofeffectivelyandaccuratelysimulatingthespatialrelationsinafracturenetwork.