简介：

简介：本单元知识网络同步讲解SectionA1.Don’tarrivelateforclass.Youmustbeontime.上课别迟到,你必须准时。(1)arrivev.到达Youmustarriveattheairporttwohoursearly.你必须提前两小时到达机场。拓展(1)arrivein+大地点WearrivedinBeijingbyplane.我们乘飞机到北京。(2)arriveat+小地点Hearrivesatschoolatseveno’clock.

简介：

简介：耶鲁大学近期开设了一门新课程，课程刚刚开设注册人数就达到了300人左右。三天之内，这个数字翻了一番多。又过了三天，约有1200名学生，也就是近四分之一的耶鲁本科生选了这门课。到底是什么课程有这么大的吸引力呢？

简介：

简介：

简介：Theconstructionofeco-civilizationisanimportantpartofsocialistconstructioninChina,anditsachievementsarerelatedtothecultivationandeffectiveimplementationoftheconceptofsustainabledevelopment.InhisreporttotheNineteenthNationalCongress,PresidentXiJin-pingpointedoutthattheconstructionofeco-civilizationisanimportantcontentthataffectsourcountryandtheglobalecologicalenvironment.Clearideasandmeasurestosolvethepeople’sneedsforabetterlifeanddevelopmentimbalancebetweenthecontradictions.Thispaperexpoundstherelationshipbetweenideologicalandpoliticaleducationandeco-civilization,andanalyzestheroleofmodernideologicalandpoliticaleducationintheconstructionofeco-civilization.Thepurposeofthispaperistoclarifythemodernideologicalandpoliticaleducationandtheconstructionofeco-civilization.Themutualrelationslaythefoundationforgivingplaytotheroleofmodernideologicalandpoliticaleducationintheconstructionofeco-civilization.

简介：

简介：

简介：

简介：

简介：Thispaperaddressestheproblemonsensorfaultestimationandfault-tolerantcontrolforaclassofTakagi-SugenoMarkovianjumpsystems,whicharesubjectedtosensorfaultsandpartiallyunknowntransitionrates.First,theoriginalplantisextendedtoadescriptorsystem,wheretheoriginalstatesandthesensorfaultsareassembledintothenewstatevector.Then,anovelreduced-orderobserverisdesignedfortheextendedsystemtosimultaneouslyestimatetheimmeasurablestatesandsensorfaults.Second,byusingtheestimatedstatesobtainedfromthedesignedobserver,astate-feedbackfault-tolerantcontrolstrategyisdevelopedtomaketheresultingclosed-loopcontrolsystemstochasticallystable.Basedonlinearmatrixinequalitytechnique,algorithmsarepresentedtocomputetheobservergainsandcontrolgains.Theeffectivenessoftheproposedobserverandcontrollerarevalidatedbyanumericalexampleandacomparedstudy,respectively,andthesimulationresultsrevealthattheproposedmethodcansuccessfullyestimatethesensorfaultsandguaranteethestochasticstabilityoftheresultingclosed-loopsystem.

简介：