简介：最近，QQ姐姐收到了很多小朋友的优秀作文。但是，仍有一些不足之处。一起去看看怎么修改吧!

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简介：StoryTime板块为每个单元的核心板块，也是单元语言项目的重要载体。该板块相应的教学策略有：适当呈现语言知识，规划词句新授；合理使用文本图片，优化文本信息；多向训练语言技能，整合表达内容；分部引导表演，推进深度参与；准确定位文本拓展，促发多元思维。

简介：Inordertoachievetheinformationfusioninthetimedomainbasedontheevidencetheory,anevidencecombinationmethodinthetimedomainbasedonreliabilityandimportanceisproposedaccordingtotheideaofevidencediscount.Firstly,thedistortionofthetime-domainevidenceisjudgedbasedonsingleexponentialsmoothing.Thereal-timereliabilityoftheevidenceattheadjacenttimeisobtainedbythereal-timereliabilityassessmentmethodoftheevidencebasedonthecredibilitydecaymodel.Then,therelativeimportanceoftheevidenceattheadjacenttimeisobtainedbycomprehensivelyconsideringimprovedconflictdegreeanduncertainty.Finally,basedonthecriterionofevidencediscountandtheDempster’sruleofcombination,theevidencecombinationiscarriedouttoachievethesequentialcombinationoftime-domainevidence.Thenumericalsimulationandanalysisshowthatthismethodhasfullyembodiedthedynamiccharacteristicsoftime-domainevidencecombination,andithasstrongprocessingabilityforconflictinformationandanti-disturbingability.Theproposedmethodhasgoodapplicabilitytoinformationfusioninthetimedomain.

简介：本单元知识网络同步讲解SectionA1.Whattimedoyougotoschool?你什么时候去上学?(1)whattime意为'什么时候,几点',常用来对具体的时间提问,可以用when替换。如:—WhattimedoesJimgotobed?吉姆什么时候睡觉?—Hegoestobedatteno’clock.他十点钟睡觉。

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简介：译林版小学英语4AUnit8Dolls,Funtime＆Cartoontime.

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简介：OnJuly23,adam-breakoccurredtotheAuxiliaryDamofXePian-XeNamnoyHydropowerStationlocatedinSouthernLaos,and5billioncubicmetersofwaterflowedoutinafewhours,whichhascausedthemostseriousfloodofthepasttenyearsinLaosandincurredthelossofmanylives.

简介：这份报纸由在矩阵的半张肌产品的框架下面使用图论的方法在一个温和假设下面处于状态与时间变体延期为布尔控制网络(BCN)的observability给一个相等的条件。首先，在考虑下面的BCN被分成没有时间延期的分系统的一个有限数字。第二，BCN的observability被测试所谓的observability的observability验证构造路径(没有时间延期的一个特殊分系统)基于图理论。这些结果在BCN的observability上扩大最近的相关结果。例子被显示说明结果的有效性。

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简介：Wehaveoptimizedtheinputpulsewidthandinjectiontimetoachievethehighestpossibleoutputpulseenergyinadouble-passlaseramplifierusingtwoNd:YAGrods.Forthispurpose,wehaveextendedtheFrantz–Nodvikequationbysimultaneouslyincludingbothspontaneousemissionandpumpenergyvariation.Theeffectivepumpenergyoftheflashlampwas8.84Jforeachgainmedium.Theenergyof1Jcouldbeamplifiedtoanoutputenergyof12.17Jwiththemaximumachievedextractionefficiencyof63.18%whenaninputpulsehavingapulsewidthof168μsissent10μsaftertheabsorbedpumpenergybecomesthemaximumvalue.

简介：Nonlinearwaveloadscaninducelow-frequencyandhigh-frequencyresonancemotionsofamooredplatformindeepwater.Fortheanalysisofthenonlinearresponseofanoffshoreplatformundertheactionofirregularwaves,themostwidelyusedmethodinpracticeistheCumminsmethod,inwhichthesecond-orderexcitingforcesinthetimedomainarecomputedbyatwo-termVolterraseriesmodelbasedonincidentwaves,first-orderbodymotionresponse,andquadratictransferfunctions(QTFs).QTFsarebichromaticwavesactingonabodyandarecomputedinthefrequencydomaininadvance.Formovingbodies,QTFsarerelatedtothefirst-orderbodyresponse,whichistobedeterminedinthesimulationprocessofbodymotionresponsebutisunknowninthecomputationprocedureofQTFs.Insolvingthisproblem,TengandCong(2017)proposedamethodtodividetheQTFsintodifferentcomponents,whichareunrelatedtothebodyresponse.WiththeapplicationofthenewQTFcomponents,amodifiedCumminsmethodcanbedevelopedforthesimulationofthenonlinearresponseofamooredfloatingplatform.Thispaperpresentsareviewofthetheory.

简介：Arobustcontrollerforbanktoturn(BTT)missileswithaerodynamicfinsandreactionjetcontrolsystem(RCS)isdevelopedbasedonnonlinearcontroldynamicmodelscomprisingcouplingsandaerodynamicuncertainties.Thefixedtimeconvergencetheoryisincorporatedwiththeslidingmodecontroltechniquetoensurethatthesystemtracksthedesiredcommandwithinuniformboundedtimeunderdifferentinitialconditions.Unlikepreviousterminalslidingmodeapproaches,theboundofsettlingtimeisindependentoftheinitialstate,whichmeansperformancemetricslikeconvergenceratecanbepredictedbeforehand.Toreducetheburdenofcontroldesignintermsofrobustness,extendedstateobserver(ESO)isintroducedforuncertaintyestimationwiththeoutputsubstitutedintothecontrollerasfeedforwardcompensation.Cascadecontrolstructureisemployedwiththeproposedcontrollawandthereinthecompoundcontrolsignalisobtained.Afterwards,controlinputsfortwokindsofactuatorsareallocatedonthebasisoftheirinherentcharacteristics.Finally,anumberofsimulationsarecarriedoutanddemonstratetheeffectivenessofthedesignedcontroller.

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简介：Thewidespreadoflocation-basedsocialnetworksbringsaboutahugevolumeofusercheck-indata,whichfacilitatestherecommendationofpointsofinterest（POIs）.Recentadvancesondistributedrepresentationshedlightonlearninglowdimensionaldensevectorstoalleviatethedatasparsityproblem.CurrentstudiesonrepresentationlearningforPOIrecommendationembedbothusersandPOIsinacommonlatentspace,andusers＇preferenceisinferredbasedonthedistance/similaritybetweenauserandaPOI.SuchanapproachisnotinaccordancewiththesemanticsofusersandPOIsastheyareinherentlydifferentobjects.Inthispaper,wepresentanoveltranslation-based,timeandlocationaware（TransTL）representation,whichmodelsthespatialandtemporalinformationasarelationshipconnectingusersandPOIs.Ourmodelgeneralizestherecentadvancesinknowledgegraphembedding.Thebasicideaisthattheembeddingofa〈time,location〉paircorrespondstoatranslationfromembeddingsofuserstoPOIs.SincethePOIembeddingshouldbeclosetotheuserembeddingplustherelationshipvector,therecommendationcanbeperformedbyselectingthetop-kPOIssimilartothetranslatedPOI,whichareallofthesametypeofobjects.Weconductextensiveexperimentsontworeal-worlddata.sets.TheresultsdemonstratethatourTransTLmodelachievesthestate-of-the-artperformance.Itisalsomuchmorerobusttodatasparsitythanthebaselines.