简介：Experimentaldesignismainlyabouthowtoreducethetesterrorcausedbyinterferencefactors,andhowtousetheleastamountoftestdatatogetcomprehensiveandreliabletestinformation.Itisanimportanttoolcoursewithstrongtheoreticalandpractical.Basedonthecombinationofteachingandpractice,atargetedselectionofteachingcontentandtheuseofadvancedteachingmethodsandteachingmethods,thispaperproposesteachingmethodtostimulatestudentsinterestinlearning,deepentheunderstandingofcurriculumcontentandmasterandcultivatestudents’applicationofthetechnologyinpracticeactivities.

简介：Abroadbandreflectivepolarizationconverterisproposed.Theunitcellofpolarizationconverteriscomposedofasingle-splitresonantring,adouble-splitresonantring,adielectricsubstrateandametallicground.Thesimulatedresultsshowthatthepolarizationconvertercanconvertx-polarizedwavesintoy-polarizedwavesandobtainabroadbandpolarizationconversionfrom0.5010THzto1.3900THzwiththepolarizationconversionratio(PCR)beyond80%atnormalincidence.Moreover,thesurfacecurrentdistributionsareinvestigatedtoexplainthepolarizationconversionmechanism.Finally,agoodagreementisachievedbetweensimulatedandmeasuredresults.Thepolarizationconvertercanbeappliedinterahertzimaging,communicationandstealthytechnology.

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简介：Thispaperisconcernedwiththeglobalboundednessproblemforaclassofstochasticnonlinearsystemswithmatchedconditions.Theuncertaintiesinthesystemsareduetoparametervariationsandexternalstochasticdisturbance.Onlythematchedconditionsandthepossibleboundoftheuncertaintiesaredemanded.BasedonthestochasticLyapunovstabilitytheory,anexplicitcontrollerisconstructedinthegradientdirection,whichrendersresponsesoftheclosed-loopsystemsbegloballyboundedinprobability.Whenthesystemsdegradetolinearsystems,thecontrollerbecomeslinear.Illustrativeexamplesaregiventoshowtheeffectivenessoftheproposedmethod.

简介：Anovelopticaltestingtarget(OTT)withthreedegreesoffreedom(DOFs)isproposedformeasuringthetrackingperformanceofaphotoelectrictheodolite.Themaincomponents,suchastheazimuthaxissystem,thepitchingaxissystem,thelinearmotionsystem,andthesimulatedtargetgenerator,aredesigned.Furthermore,thelinearmodulewiththeformofalarge-spanandlow-stiffnesscantileverbeamisstrengthenedusinganintegratedoptimizationmethod.Afterthestructureisstrengthened,the1st-ordernaturalfrequencyincreasesfrom14Hzto32Hz.Finally,afunctionaltestisperformedandtheresultsshowthatcomparedwithatraditionalopticaltesttarget,thesimulatedtargetgeneratedbythenoveltargetisadvantageousinpractice.

简介：TheserviceprovidedbytheGC(GammaCameras)intheNuclearMedicinedepartmentsfailsbecauseoftheirbreakdown,generallyduetotheassociatedelectronicsandnottothephysicaldetectioncomponents.Forthisreason,itwasdecidedtodevelopanelectronicsystemthatallowstherecoveryandoptimizationofdisusedGC,startingwiththedesignofthepreamplifierforaPMT(photomultipliertube).Thecircuitwasdesignedandsimulatedandthelistofcomponentsnecessaryfortheconstructionofthepreamplifierwasgenerated,aswellastheprintedcircuitboardwasdesignedforitsassembly.Bysimulatingthepreamplifierthisworkedinlinearmode.Thisdeterminesthattheamplitudeoftheoutputsignalisproportionaltotheamountofchargedeliveredbythedetector.ThiscardallowsanautomaticadjustmentofthesignalsofthePMTasdothemodernGC.

简介：Arobustadaptivepredictorisproposedtosolvethetime-varyinganddelaycontrolproblemofanoverheadcranesystemwithastereo-visionservo.Thepredictorisbasedontheuseofarecurrentneuralnetwork(RNN)withtappeddelays,andisusedtosupplythereal-timesignaloftheswingangle.Therearetwotypesofdiscrete-timecontrollersunderinvestigation,i.e.,theproportional-integral-derivative(PID)controllerandtheslidingcontroller.Firstly,adesignprincipleoftheneuralpredictorisdevelopedtoguaranteetheconvergenceofitsswingangleestimation.Then,animprovedversionoftheparticleswarmoptimizationalgorithm,theparallelparticleswarmoptimization(PPSO)methodisusedtooptimizethecontrolparametersofthesetwotypesofcontrollers.Finally,ahomemadeoverheadcranesystemequippedwiththeKinectsensorforthevisualservoisusedtoverifytheproposedscheme.Experimentalresultsdemonstratetheeffectivenessoftheapproach,whichalsoshowtheparameterconvergenceinthepredictor.

简介：Inordertoassurequalityandcontrolprocessinthedevelopmentoftheaircraftcollaborativedesignsoftware,amaturityassessmentmodelisproposed.Therequirementsdesigning—houseofqualityisdesignedtoevaluatethematuritydegreeofthesolution,andtheevaluationresultscanhelptomanageandcontrolthedevelopmentprocess.Furthermore,afuzzyevaluationmethodbasedontheminimumdeviationisproposedtodealwiththefuzzyinformation.Thequantitativeevaluationresultofthematuritydegreecanbecalculatedbyoptimizingthesemanticdiscountfactoraimfortheminimumdeviation.Finally,thismodelisillustratedandanalyzedbyanexamplestudyoftheaircraftcollaborativedesignsoftware.

简介：Processesthataimatcontinuousinnovationandhelptoplanpathsthatcansupportandhelptobuildsustainabledevelopmentareencouragedbyallofusandinparticularbypublicadministrationsandprivatecompanies.SolarDecathlonMiddleEast2018isaninternationalcompetition,aimingtodesignandrealizethebestsustainableandenergy-efficienthousingprototypeonarealscale.Theprojectaimstocreateasmartsolarhousethatcanguaranteemaximumefficiencyandeffectivenessintheuseoftechnologyresourcesandprovideanattractive,accessible,andcomfortableenvironment.Theaimofthepaperistoanalyzethecontestfromeducationalstandpoint,highlightingtheaspectsofsmartsystemsandsmartpeople.Theuniversityteamwhichiscompetinginthiseditionhastheobjectiveofdesigningandbuildingintwoyearsafull-scaleprototypeofthebestandmostattractivesustainable,zeroenergy,andsmartsolarhouse.

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简介：Inordertodesignacomplexlaserresonatorwithmulti-parameters,themethodofparticleswarmoptimization(PSO)algorithmisemployed.Theparametersinfluencingtheresonatorstabilityandmodesizedistributionaretakenintoconsideration,andthestabilitycriteriaindexandthemodesizedistributionareusedastargetvalues.TheabsolutevaluesofthedifferencesbetweenpracticalandthetargetvaluesaresetasthefitnessfunctionforthePSO.Byminimizingthefitnessfunction,alaserresonatorwiththeoptimizedcavityparameterscanbefound.TheanalysesforthedesignexampledemonstratethefeasibilityandvalidityofthePSOmethodinthecomputeraideddesignofmul-ti-parameterslaserresonator.ApplyingPSOalgorithmintheintelligentdesignofsolidstatelaserresonatorscanrealizethe.transitionfrommanualtrial-and-errortocomputerintelligentdesignofthelaserresonators.

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简介：Withthepopularizationofe-learning,LearningSupportSystem(LSS)isplayinganincreasinglyimportantroleinteachingandthereformofeducation.Althoughpureresource-basedLSSisprevailed,itcannotmeettheneedsoflearningsupportintheeraofbigdataandmassiveresources.BasedontheteachingpracticeofLSSsupportingcomputercoursesinrecent10years,andcombinedwiththeexperienceofoptimizingLSSyearbyyear,theintelligentLSSdesignwithknowledgestructureasthemainbodyisproposed.AndtheLSSisoptimizedfromfiveaspects,includingmicro-resourcepackagestructureorientedtoknowledgepoints,knowledgestructuralreorganizationofthelearningresources,monitorandfeedbacklearningbehaviorguidedbyvisualtheoryoflearningprogress,resourcesrecommendationbasedonthestudyprogressandtheknowledgestructure,andreusinghigh-qualitydiscussionpostsandquestions.Teachingpracticehasprovedthatthestructureddesignofresourcepackagecanencourageimagination.Learningmonitoringandfeedbackmechanismcanmaintainmotivationandimproveself-efficacy.Learningresourcerecommendationstrategyplaysasignificantroleinhelpingstudentsfocusonlearningcontentandimproveefficiency.Highqualitypostisconducivetostudents’deeplearning.

简介：Asanadvancedprocessdetectiontechnology,electricalimpedancetomography(EIT)haswideapplicationprospectsandadvantagesinmedicalimagingdiagnosis.However,aseriesofissuesneedtobeaddressedbeforeapplyingEITforbedsidemonitoring.Medicaldiagnosisandbedsidemonitoringaredynamicmeasuringprocess,wherethepositionsofmeasuringelectrodesandtheshapeofthedetectedfieldarechangingdynamical.Duetotheinabilitytocopewiththechangeableelectrodepositionsandvariousdynamicfields,existingEITsystemsaremainlyusedforindustrialdetectioninconditionofstaticmeasurementandvisualization.Inthispaper,weinvestigatethedynamicmeasurementandvisualizationofhumanbreastinEITfield,describethedesignofthemeasuringsensorsystem,andexpoundthemeasuringprinciple.Themaincomponentofthehardwaresystemisabuiltinservoelectricalresistancetomographysensorwithcapacitiveslidingrod,whichcanadapttothecrowdofdifferentchestcontourandthechangeofchestshapeinthedynamicprocessofbreathing.Thecorrespondingmeasuringprincipleisextractingallreal-timepositionsofmeasuringelectrodes,thenobtainingthedynamicboundary,finallydividingthedetectionfieldrapidly.Experimentalresultsconfirmedthattheproposedsystemcanobtainreal-timelocationofboundarysensoranddynamicallysolvetheproblemofarbitrary-shapeboundarymeasurement.Theimagingresultsvalidatetheavailabilityofdesignedsensorsystemandtheeffectivenessofthecorrespondingmeasuringprinciple.

简介：新技术上先进的产品的发展从技巧和学科的一个范围要求贡献，它经常是困难的在一个单个公司或组织以内发现。，要求建立在设计的系统(SE)练习越过供应网络保证活动和任务的协作，当它来便于知识在早系统设计期间分享和协商时，突然掉落。实验观察看那系统级的要求什么时候不是可得到的足够成熟，处理长铅时间分系统的发展的工程师趋于指向本地optima，而非开创设计空间。这现象引起设计队产生不为全面系统表达最好的可能的配置的解决方案。这份报纸的目的是显示出为值驱动的设计的方法论怎么可以处理这个问题，便于早阶段设计重复和早阶段设计交易的决定。纸描述如此的方法论怎么可以帮助关于一个系统的设计目的收集并且派遣相关知识到设计队的跨functional，因此在SE为要求引导便于一个更并发的过程。纸也描述唤起(早与知识成熟珍视面向的设计探索)，在值相关的信息的库上在分系统水平允许benchmarking设计选择的一个概念选择方法由系统综合者交流了。使用唤起在与一个飞机引擎部件的设计有关的工业案例研究被例示。唤起能力在SE过程在早阶段设计概念的价值贡献上提起了解进一步在特定的设计事件与工业专业人员一起被验证了。

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简介：Extremewaterlevelisanimportantconsiderationwhendesigningcoastalprotectionstructures.However,frequencyanalysisrecommendedbystandardcodesonlyconsiderstheannualmaximumwaterlevel,whereaswaterlevelsshouldactuallyberegardedasacombinationofastronomicaltideandstormsurge.Thetwoimpactingfactorsarebothrandomvariables,andthispaperdiscussestheirdependencystructuresandproposesanewjointprobabilitymethodtodetermineextremedesignwaterlevels.Thelognormal,Gumbel,Weibull,Pearsontype3,traditionalmaximumentropy,andmodifiedmaximumentropydistributionsareappliedtofitunivariatedataofastronomicaltidesandstormsurgesseparately,andthebivariatenormal,Gumbel-Hougaard,FrankandClaytoncopulasarethenutilizedtoconstructtheirjointprobabilitydistributions.Toensurethatthenewdesignmethodissuitableforusewithtyphoondata,theannualoccurrencefrequencyoftyphoonprocessesisconsideredandcorrespondingbivariatecompoundprobabilitydistributionsareproposed.BasedonmaximumwaterleveldataobtainedfromHengmenhydrologicalstationinthePearlRiverBasin,China,theseprobabilitymodelsareappliedtoobtaindesignsforextremewaterlevelsusingthelargestsumoftheastronomicaltideandstormsurgeobtainedunderfixedjointreturnperiods.Thesedesignvaluesprovideanimprovedapproachfordeterminingthenecessaryheightofcoastalandoffshorestructures.

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