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500 个结果
  • 简介:叠字在中国古诗中有其特殊的修辞效果和艺术感染力,但是翻译中却很难展现出原诗中叠字的艺术魅力。本篇论文以《采薇》一诗的四个译本比较其中的叠字翻译优劣,并借助其他翻译大家的译作总结出两种叠字的翻译方法。

  • 标签: 《采薇》 叠字 中国 古诗 翻译 译本
  • 简介:抑制的安全散布了互连的力量系统的最佳的力量流动(DOPF)被介绍。多区域力量系统的集中的OPF问题被分解成独立DOPF潜水艇问题,为每个区域的。动态安全区域(数据设置就绪)作为限制被包括保证短暂稳定性限制和静态的电压稳定性区域(SVSR)得到限制,和输送管线上电流限制。不同区域的DOPF潜水艇问题的答案通过定价机制被协调直到他们收敛到集中的OPF答案。非线性的DOPF潜水艇问题被预言者修正者内部点方法(PCIPM)解决。IEEE三区域的RTS-96系统被得出以便表明建议方法的有效性。

  • 标签: 电力系统 中继电网 分布式最优电流 电网安全
  • 简介:Thispaperproposesahybriddecoupledpowerflowmethodforbalancedpowerdistributionsystemswithdistributedgenerationsources.Themethodformulatesthepowerflowequationsinactivepowerandreactivepowerdecoupledformwithpolarcoordinates.Second-ordertermsareincludedintheactivepowermismatchiteration,andconstantJacobianandHessianmatricesareused.Ahybriddirectandindirectsolutiontechniqueisusedtoachieveefficiencyandrobustnessofthealgorithm.Activepowercorrectionissolvedbymeansofasparselowertriangularanduppertriangular(LU)decompositionalgorithmwithpartialpivoting,andthereactivepowercorrectionissolvedbymeansofrestartedgeneralizedminimalresidualalgorithmwithanincompleteLUpre-conditioner.Typicaldistributiongenerationmodelsanddistributionloadmodelsareincluded.Theimpactofzero-impedancebranchesisexplicitlymodeledthroughreconfiguringoftheadjacentbrancheswithimpedances.Numericalexamplesonasampledistributionsystemwithwidespreadphotovoltaicinstallationsaregiventodemonstratetheeffectivenessoftheproposedmethod.

  • 标签: 功率流方法 配电系统 混合 解耦 HESSIAN矩阵 JACOBIAN
  • 简介:CentralBusinessDistrict(CBD),aconceptthatwasfirstproposedbyU.S.scholarsinthe1920s,referstoabusinesscenterthatfunctionsasacommercialtrading,finan-cialinformation,culturalcenter,exhibitionandofficeareaallrolledintoone:aplacethatisthecenterofbusiness,thedrivingpowerofurbaneconomicdevelopmentandthesoulofacity.

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  • 简介:Intenseclashesofinterestsandcollusionofideassprangupincessantlyamongnationsoverupwardsovereigntytransfer,interestsdistributionandmaintenanceofparityamongpartnersinthecourseofeconomicintegration.Disparitiesinsize,territory,nationalstrengthanddevelopmentlevelconceivablyoftenledtotensionsandevencrisesoverpowerdistribution.SoEUhistorycanbedescribedasoneofcrisesorcrisissettlementthroughreachinganewequilibrium,asignificantprocessforsustainedEUstability.

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  • 简介:1.AllpowersupplyunitsundertheStatePowerCorporationshallpublicizepowertariffstandardsandserviceprocedures.2.AllpowersupplyunitsoncountyorhigherlevelundertheStatePowerCorporationshallopentoservice7daysaweek.3.Powersupplysecurity,reliabilityandservicequality

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  • 简介:One-dimensionalringpowersystemisdiscreditedtoanumberofnodeseachcontainingageneratorwithinternalreactanceandloadbranchofresistanceandreactancewithacertainpowerfactor.Whenadisturbanceoccursatanymachineinthepowersystem,simulativeanalysisisperformedtoverifyhowthevariationofloadpowerfactoraffectingthebehaviorofelectromechanicalwavepropagationbyusingtheMATLABpackage,fromwhichdifferentsituationsarepresentedanddiscussed.Theseresultsshowthetypeofloadhasnoeffectonthebehaviorofelectromechanicalwavepropagation.

  • 标签: ELECTROMECHANICAL wave propagation one-dimensional POWER SYSTEM
  • 简介:Heathandlinghasbeenasignificantproblemofthehighpowerfiberlasersystemsastheoutputpowerincreasesrapidly.Claddingpowerstripper(CPS)whichisusedtodealwiththeunwantedopticalpowerandlightisrequiredforhighercoolingability.Sothemethodsofstrippingtheunwantedlightattractedmuchattentionrecently,andthethermaleffectisgiven.However,fewinvestigationsfocusonthedissipationoftheheatconvertedfromtheunwantedlight.Inthispaper,anapproachofactivecoolingforCPSisdemonstrated.ThisisachievedbyusingmicrochannelcoolingtechnologyinheatsinkinginCPStoimprovetheefficiencyofheatexchange.InordertoexplainthemechanismofCPSthefunctionofitandconsistenceofcategoriesoftheunwantedlightaredetailedfirstly.Thenmicrochannelheatsinkingisproposedandverifiedbytheheatexchangetheory.Atlast,thedesignoftheCPSwithmicrochannelheatsinkingisshownandfollowingexperimentisconducted.Thefinaltemperatureofthedevicewith1000WcladdingpowerwasdemonstratedatlasttoverifytheabilityofheatdistributionoftheCPScomponent.ThissuggeststhattheseCPSscanbeusedtostripeathousandofwattsoflightinhighpowerdoublecladdingfiberlasers.

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  • 简介:TheRightWordsattheRightTime汇集了美国各行各业成功人士的语录。他们都回忆了人生路上改变自己命运的一句话或几句话,包括小时侯来自长辈的鼓励,特别是来自干妈妈的鼓励。雅芳公司女总裁AndreaJung回忆起的是母亲曾对她说过的一句话“Giriscandoabsolutelyanythingboyscando.Awomancanreachany

  • 标签: 杜子华 The RIGHT WORDS at the
  • 简介:<正>London24November2004MotheristhemostbeautifulwordintheEnglishlanguage,accordingtoasurveyofover40,000overseasvotersandlearnersofEnglishatBritishCouncilteachingcentres.ThesurveywasconductedbytheBritishCounciltocoincidewithits70thanniversarycelebrations.TheBritishCouncilaskedover7,000learnersin46countrieswhattheyconsideredtobethemost

  • 标签: BEAUTIFUL MOTHER WORD coincide OVERSEAS asked
  • 简介:Speakervariabilityisanimportantsourceofspeechvariationswhichmakescontinuousspeechrecognitionadifficulttask.Adaptingautomaticspeechrecognition(ASR)modelstothespeakervariationsisawell-knownstrategytocopewiththechallenge.AlmostallsuchtechniquesfocusondevelopingadaptationsolutionswithintheacousticmodelsoftheASRsystems.Althoughvariationsoftheacousticfeaturesconstituteanimportantportionoftheinter-speakervariations,theydonotcovervariationsatthephoneticlevel.Phoneticvariationsareknowntoformanimportantpartofvariationswhichareinfluencedbybothmicro-segmentalandsuprasegmentalfactors.Inter-speakerphoneticvariationsareinfluencedbythestructureandanatomyofaspeaker'sarticulatorysystemandalsohis/herspeakingstylewhichisdrivenbymanyspeakerbackgroundcharacteristicssuchasaccent,gender,age,socioeconomicandeducationalclass.Theeffectofinter-speakervariationsinthefeaturespacemaycauseexplicitphonerecognitionerrors.Theseerrorscanbecompensatedlaterbyhavingappropriatepronunciationvariantsforthelexiconentrieswhichconsiderlikelyphonemisclassificationsbesidespronunciation.Inthispaper,weintroducespeakeradaptivedynamicpronunciationmodels,whichgeneratedifferentlexiconsforvariousspeakerclustersanddifferentrangesofspeechrate.Themodelsarehybridsofspeakeradaptedcontextualrulesanddynamicgeneralizeddecisiontrees,whichtakeintoaccountwordphonologicalstructures,rateofspeech,unigramprobabilitiesandstresstogeneratepronunciationvariantsofwords.EmployingthesetofspeakeradapteddynamiclexiconsinaFarsi(Persian)continuousspeechrecognitiontaskresultsinworderrorratereductionsofasmuchas10.1%inaspeaker-dependentscenarioand7.4%inaspeaker-independentscenario.

  • 标签: 词典 偏差 语音 文字
  • 简介:Anintelligentcoordinatedcontrolstrategyhasbeenproposedandsuccessfullyappliedtoa300MWboiler-tur-bineuniti.e.Unit1ofYuanbaoshanpowerplantinChina.Loadfollowingoperationofcoal-firedboiler-turbineunitinthepowerplantleadstochangesinoperatingpointswhichresultinnonlinearvariationsoftheplantvariablesandparameters.Forthevariationofoperatingconditionandslowlyvaryingdynamics,anintelligentcontrolschemehasbeendevelopedbycombiningfuzzyself-tuningwithadaptivecontrolandauto-tuningtechniques.Asthereexiststrongcouplingsbetweencontrolloopsofmainsteampressureandpoweroutputintheunit,anewdesignforstaticdecoupleraimedatdecouplingforsetpointsandunmeasuredpulverizedcoaldisturbanceofthesystematthesametimeispresented.Satisfactoryindustrialapplicationresultsshowthatsuchacontrolsystemhasenhancedadaptabilityandrobustnesstothecomplexprocess,andbettercontrolperformanceandhigheconomicbenefithavebeenobtained.

  • 标签: 智能控制 协同控制 模糊推理 自适应控制 静态退耦 工业应用
  • 简介:Twomethodsforimprovingtheequidrivingpower-frequencycharacteristicsofbroad-bandhighpowerklystronsarepresented.Oneisthatacomb-linebandpassfilterwithsomeattenuationpropertiesisinsertedbetweentheTWTdriverandtheklystronforcompensatingthegain-frequencycharacteristicsoftheklystrontogettherequiredequidrivingpower-frequencycharacteristics.Theotheristhatareactiveelementisconnectedwiththeinputcavitytochangeitsresonancefrequenciesf0andQL,andthustoimprovethepower-frequencycharacteristicsoftheklystron.

  • 标签: BROADBAND high power KLYSTRON Equidriving BANDWIDTH