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简介：Inthispaper,anactivefaultaccommodatestrategyisproposedfortheplantinthepresenceofactuatorfaultandinputconstraints,whichisacombinationofadirectadaptivecontrolalgorithmwithmultiplemodelswitching.Theμ-modificationisintroducedinthemodelreferencearchitecturetoconstructtheadaptivecontroller.TheproofofstabilityisbasedonthecandidateLyapunovfunction,whileappropriateswitchingofmultiplemodelsguaranteesasymptotictrackingofthesystemstatesandtheboundednessofallsignals.Simulationresultsillustratetheefficiencyoftheproposedmethod.

简介：Ingeneral,theseismicresponseanalysisinearthquakeengineeringassumesthatthevibrationparametersofthetargetandthecontactsurfaceoftheexternalmediaareidentical,i.e.,singlepointinput.However,earthquakeenergyhasanattenuationphenomenoninwavepropagation,soawiderangeofsoilslopesandtheexternalmediumcontactsurfaceofdifferentinputpointsonmotionarenotidentical.Ifweconsidersinglepointinputonly,itmaynotcorrespondwithreality,soitisnecessarytocarryoutresearchonmulti-pointinputmethods.Basedonthe2-Dslopemodel,single-pointinputandmulti-pointinputareperformedrespectivelytoanalyzeandcomparetheirsimilaritiesanddifferencesintheperspectivesofthecharacteristicsofseismicresponseofsoillayerandplasticzonedistributiontoprovideareferencefortheseismicdesignofslopes.Theresultsshowthatintheperspectiveofsoilseismicresponseanalysis,thepeakaccelerationoutputandpeakvelocityoutputundermulti-pointinputaregreaterthanthepeakvaluesundersinglepointinputatthesamemonitoringpoint,thepeakappearingtimeisalsoearlierthanthatofthesinglepointinput;intermsoftheplasticzonedistribution,themulti-pointeffectismanifestedasthepresenceofmoreobvioustensileshearfailures;intheperspectiveofsafetycoefficient,thesafetycoefficientundereachmulti-pointinputissmallerthanthatofsinglepointinput,adifferenceofabout7%orso.Insummary,multi-pointinputismorereasonableandpracticalthansinglepointinput,somulti-pointinputshouldbeconsideredinseismicdesign.

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简介：Inthisessay,westudiedhowheatinputaffectedthemicrostructure,hardness,grainsizeandheat-affectedzone(HAZ)dimensionofWCX355ultra-finegrainsteelwhichwasweldedrespectivelybytheultranarrow-gapwelding(UNGW)processandtheoverlayingprocesswithCO2asprotectiveatmosphereandlaserweldingprocess.Theexperimentalresultsshowwhentheheatinputchangedfrom1.65kJ/cmto5.93kJ/cm,thewidthofitsHAZrangedfrom0.6mmto2.1mm.Theaveragegrainsizegrewupfrom2～5μmofbasemetalto20～70μmandfoundnoobvioussoftenphenomenoninoverheatedzone.Thewidthofnormalizedzonewasgenerallywideas2/3asthatofthewholeHAZ,andthegrainsizeinthiszoneissmallerthanthatinbasemetal.Underthecircumstanceofequalheatinput,theHAZwidthofUNGWisnarrowerthanthatofthelaserwelding.

简介：Becomingtheworld’slargestemitterofcarbonmakesChinatheobjectofcriticism;however,peoplemayignorethefactthatwhenChinaexportslow-carbonproducts,thecarbonemissionshavebeenleftinthemeanwhile,formingtheso-called"embodiedcarbon".Usingtheinput-outputmodel,thispaperanalyzesthecarbonemissionintensityandamountofembodiedcarbonofvarioussectorsinChina’sexporttradein2002and2007,andfiltersouthighcarbonemissionsectors.Inaddition,thispaperalsopointsouttheproblemofcarbonemissions’internationaltransferfromdevelopedcountriestoChinathroughtheanalysisofnationalandregionalflowofexportcarbonemissionsandchangingoftheproportionofemissionsforexportsrelativetototalemissions,andexplainsthereasonthatcausedcarbontransfertoChinabyusingthetreadmillofproductiontheory.Basedonthat,thispaperproposessomemeasuresforcarbonreductioninChinafromtheforeigntradeperspective.

简介：基于观察员的适应滑动模式的问题与易于输入非线性的变化时间的延期三角洲控制操作符系统被调查。这非线性的斜坡参数是无节制的。一条新奇适应控制法律被建立以便在州评价的空间的滑动表面能在一有限时间被到达。A延期依赖者足够为错误系统和滑动模式动力学的asymptotic稳定性调节经由线性矩阵不平等(LMI)被导出。最后，一个模拟例子被举显示出建议方法的有效性和优点。

简介：Basedontheconceptofproductivecapitalstock,thispaperestimatedcapitalinputbythreeassettypesofChina’s36serviceindustriesin2003–2015,andcomparedwiththeresultsofwealthcapitalstock.Thisstudyfoundthatthewealthcapitalstockmethodunderestimatestheactualcapitalinputineachsectorinvaryingdegrees,anditmayinterferencetheaccuracyofproductivityevaluationinsectors.Accordingtothenewestimationresultsofcapitalinput,thispaperfurtherappliedfourstagesbootstrap-DEAmethodtoestimateindustrialproductivity,andcalculateditsconfidenceintervals.Thisstudyfoundthat,theyearsofeducationandtheaveragewagehaveasignificantpositiveimpactontheproductivityofserviceindustries;theproductiveserviceshaveashortboardeffectinthewholeserviceindustry.

简介：Inthispaper,anIndependentWindow-Access(IWA)schemeisproposed,andtheperformanceofaninput-bufferedATMswitchingfabricwiththeIWAschemeisanalysedbymeansofaprobabilitygeneratingfunctionapproach,theclosedformulasoftheaveragecelldelayandthemaximumthroughputaregiven,andresultsshowthattheIWAschememakestheswitchingfabrichavebetterperformancesthantraditionalwindow-accessscheme.Thecomputersimulationresultsareingoodagreementwiththeseanalyticalresults.

简介：Thepaperassessestheeconomicimpactsofthenaturalforestprotectionprogram(NFPP)ontheeconomyofYunnanProvince,China,intermsofgrossoutput,valueadded,employment,andhouseholdincome.Aninput-outputmodelisdevelopedtoestimateNFPP'seconomicimpactsbymeansofbackwardlinkagesintheforestrysectorandloggingandhaulagesector.ItisfoundthattheNFPPhaspositiveimpactsongrossoutput,valueaddedandhouseholdincomeintheinitialyear,buthassignificantlynegativeimpactsontheregionaleconomyinthefollowingyearsastheinvestmentdecreases.

简介：Average(mean)voterisoneofthecommonestvotingmethodssuitablefordecisionmakinginhighly-availableandlong-missionsapplicationswheretheavailabilityandthespeedofthesystemarecritical.Inthispaper,anewgenerationofaveragevoterbasedonparallelalgorithmsandparallelrandomaccessmachine(PRAM)structureareproposed.Theanalysisshowsthatthisalgorithmisoptimalduetoitsimprovedtimecomplexity,speed-up,andefficiencyandisespeciallyappropriateforapplicationswherethesizeofinputspaceislarge.

简介：AninputcouplerfortheTE021circularelectricmodeinagyroklystronamplifierthroughusingTE811asatransitioncouplingmodeinacoaxialcavityhasbeenproposedandnumericallysimulatedinafrequencyrangeofKa-BandwithHFSScode.ThecouplingefficiencyoftheTE021modeandthesuppressionfortheTE811modeinthemaincylindricalcavityaredeliberatelyconsideredbyadjustingthepositionandsizeofcouplingholesaswellastheradiusofthedrifttubes.ThenumericalresultsshowthattheTE021modecansuccessfullybeexcited,andrationalcouplingefficiencyandhighmodepurityfortheTE021modeinthecylindricalcavitycanbereachedfortheengineeringapplicationofgyroklystronamplifierstudy.

简介：High-frequencystocktrendpredictionusingmachinelearnershasraisedsubstantialinterestinliterature.Nevertheless,thereisnogoldstandardtoselecttheinputsforthelearners.Thispaperinvestigatestheapproachofadaptiveinputselection(AIS)forthetrendpredictionofhigh-frequencystockindexpriceandcomparesitwiththecommonlyuseddeterministicinputsetting(DIS)approach.TheDISapproachisimplementedthroughcomputationoftechnicalindicatorvaluesondeterministicperiodparameters.TheAISapproachselectsthemostsuitableindicatorsandtheirparametersforthetime-varyingdatasetusingfeatureselectionmethods.Twostate-of-the-artmachinelearners,supportvectormachine(SVM)andartificialneuralnetwork(ANN),areadoptedaslearningmodels.AccuracyandF-measureofSVMandANNmodelswithboththeapproachesarecomputedbasedonthehigh-frequencydataofCSI300index.TheresultssuggestthattheAISapproachusingt-statistics,informationgainandROCmethodscanachievebetterpredictionperformancethantheDISapproach.Also,theinvestmentperformanceevaluationshowsthattheAISapproachwiththesamethreefeatureselectionmethodsprovidessignificantlyhigherreturnsthantheDISapproach.

简介：ThesoftwareofSYSWELDwasusedtobuildmodelandsimulatethermalcycleofin-serviceweldingontoactivegaspipeline.Influenceofpipediameter,wallthicknessandheatinputonthermalcyclewasstudied.Theresultsshowthatt8/5,t8/3andpeaktemperatureofinnersurfacedecreasewhenwallthicknessincreasesfrom5mmto12mm.Butt8/1willincreaseswiththeincreaseofwallthicknessandwilldecreaseafterthewallthicknessislargerthan7mm.Pipediameterhaslittleinfluenceonthermalcycleandthatinfluencecanbeignoredwhenpipediameterisgreaterthan273mm.t8/5,t8/3,t8/1andpeaktemperatureofinnersurfacewillincreasewiththeincreaseofheatinput.

简介：为波浪繁殖建模的一个新方法在这份报纸被介绍。由使用限制优化(Lagrange更多样地)方法，当使遭到了到限制时，加权的摆平的Fourier振幅的和被最小化。从所有产量模型获得的最大的振幅的和被规范化为统一并且作为限制被拿。在这个方法，所有实际时间历史被看作产量并且同等地处理了。独立于时间历史的联合(或选择的第一次历史)在分析期间，方法捕获由出现的历史清除山峰的实际时间的关系。这份报纸描述模型的明确的表达并且在规范的输入产量最小化(NIOM)上说明这个方法的优点方法。Mod-NIOM然后被用来分析在科比在端口岛垂直数组地点记录的Hyogoken-nanbu地震的时间历史，它受不了强壮的运动在主要吃惊期间引起的液化。尽管表面时间历史被液化极大地修改，这个方法在这个地点显示出在观察时间历史之间的好关联。

简介：Heattransferintheevacuatedcollectortubeisathree-dimensionallaminarnaturalconvectionproblemdrivenbybuoyancy.Becauseofitscomplexity,noeffectivetheoreticalmodelisavailabledespiteoflimitedexperimentalworkwhichisconfinedtooneaspect.Thepresentworkaimstodepicttheconvectiveheattransferinsideatwo-endedinclinedtubewithEast-Westsymmetricheatinputusingnumericalmethods,Basedonreasonableassumptions,governingequationsoftheinsidefluidareestablished.Thecorrespondingdiscretizatedequationsaresolvedbyemplogyingnumericalmetholds.Thecalculatedresultsaredisplayedforvelocityandtemperatureprofilesondifferentcross-sectionalplasnes.whichpresenttheflowpatterncharacterizedbyupflowanddownflowalongtheaxialdirectionandadherentflowalongtheperipheraldirection,andtheheattransferrpocessfromthewalltothecenter,Furthermore,thetransientNusseltnumberandaveragetemperaturelevelareshownanddiscussed.Finally,theparametriceffectsofthetuberadiusandtheheatinputontheflowandheattransferarealsogiven.

简介：这份报纸在控制结束与匹配的一般泛音骚乱考虑参数评价和一个不稳定的一个维的波浪方程的稳定。为无限维的系统的backstepping方法在适应管理者的设计被采用。这被显示出结果靠近环的系统是asymptotically稳定的。同时，当时间去无穷，估计的参数被显示对未知参数会聚。

简介：Basedontheclassical(matrixtype)input-outputanalysis,atypeofnonlinear(continuoustype)conditionalLeontiefmodel,input-outputequationwereintroduced,aswellasthreecorrespondingquestions,namely,solvability,continuityandsurjectivity,andsomefixedpointandsurjectivitymethodsinnonlinearanalysiswereusedtodealwiththesequestions.Asaresult,themaintheoremsareobtained,whichprovidesomesufficientcriterionstosolveabovequestionsdescribedbytheboundarypropertiesoftheenterprise'sconsumingoperator.

简介：Becauseconditionsforthegrainproductionarenotfavorableandtheinputintheproductionfactorsofmodernagricultureisnotsufficient,thegrainsupplyhasbeenlessthanthedemandforalongtime.Bymeansofgreycorrelationanalysis,thispaperdealswiththecorrelationsituationamongsuchinputfactorsasthegrainsownarea,thetotalpowerofagriculturalmachinery,thefertilizerutilizationvolume,theactualirrigationarea,thedamagearea,thenumberoffarminglaborforce,inordertounderstandthemajorrestrictinganddrivingforcesthathaveaffectedthegrainoutputintherecent23years.TheanalysisshowsthatthegrainsownareaandfertilizerutilizationvolumearethetwomostimportantleadingfactorsthataffectgrainproductioninGuizhouProvince,whilethedamageareaandthetotalpowerofthefarming-usedmachinesarethefollowingfactors.Fertilizerutilizationvolumeandtheactualagriculturalmachineryandirrigationareaarethetwoincreasinglyinfluentialfactorsthataffectgrainproduction.Theinfluenceofthefarminglaborforceupongrainproductionbecamelessstrong.ThemainmeasurestoincreasegrainproductionoutputinGuizhouProvincearetostabilizethearableland,increasetheactualirrigationarea,expeditethetransferofthefarminglaborforceandincreasetheinputofmodernagriculture.