简介：Inthispaper,weproposeaprotocoltodeterministicallyteleportanunknownmixedstateofqubitbyutilizingamaximallybipartiteentangledstateofqubitsasquantumchannel.Ifanon-maximallyentangledbipartitepurestateisemployedasquantumchannel,theunknownmixedquantumstateofqubitcanbeteleportedwith1-(1-C~2)~(1/2)probability,whereCistheconcurrenceofthequantumchannel.Theprotocolcanalsobegeneralizedtoteleportamixedstateofquditoramultipartitemixedstate.Moreimportantpurposeisthat,onthebasisoftheprotocol,theteleportationofanarbitrarymultipartite(pureormixed)quantumstatecanbedecomposedintotheteleportationofeachsubsystembyemployingseparateentangledstatesasquantumchannels.Inthecaseofdeterministicteleportation,Bobonlyneedstoperformunitarytransformationsonhissingleparticlesinordertorecovertheinitialteleportedmultipartitequantumstate.

简介：Theyearof1996wasnotbadatallfortheUnitedStates.Itseconomywentsmoothly,thePresidentandtheRepublicanpartybothgotwhattheywantedintheelections,andthecountrydidnotsufferanymajorforeignpolicycrisis.Theyearof1997maybesomewhatdifferent.Mosteconomistsforeseethatthisyear,theseventhyearofeconomicgrowthfortheU.S.sincetherecoveryin1991,wouldbeanothermoderateyearforthe

简介：我们为斜Bellstates的任意的混合的远距传物建议一个协议，隧道能与混合的纯最大地纠缠的statesor绑了的任何一个被构造，这被显示出纠缠的状态。我们也介绍协议认识到经由多粒子的斜贝尔状态的控制teleportationof混合混合了状态。我们的结果证明boundentangled状态也是在量通讯任务的重要、有用的资源。

简介：<正>惊奇常常是在箱子里出现:包在彩色包装纸里面的生日礼物,朋友寄来牛皮纸包的包裹。不论是怎样的箱子,人们都喜欢打开来看看里面是什么。在美国以及其它许多国家,有一个特殊的箱子关系着未来,这

简介：Everyfouryears,Americanselectapresident.AccordingtotheConstitution(宪法)anyAmericancitizenover40yearsofagewhowasbornintheUoSocanbepresident.Therearealwaysmanycandi-dateswhohopetheywillbeelected.TherearemanypoliticalpartiesintheUnitedStates,

简介：我们知道美国国会有参议院和众议院。它们的组成如何，有什么作用，相互间是如何协调的？请看……

简介：TheinterannualvariabilityoftheAtlantictropicalcyclone(TC)frequencyiswellknown.Separately,recentstudieshavealsosuggestedthatamuchlonger,multidecadal(40-60year)trendmightbeemergingfromtherecentincreaseinAtlanticTCactivity.However,theoverallstructureoftheintrinsicfrequencies(ortemporalmodes)ofAtlanticTCactivityisnotyetknown.ThefocusofthisstudyistosystematicallyanalyzetheintrinsicfrequenciesofAtlanticTCactivityusinghurricaneandtropicalstormlandfalldatacollectedalongthesoutheastcoast(SEC)oftheUnitedStates.BasedonanEmpiricalModeDecomposition(EMD)analysisofthefrequencyoflandfallTCsalongtheSECfrom1887-1999,wehavefoundthatAtlanticTCactivityhasfourprimary,temporalmodes.Theinterannualandmultidecadalmodesreportedinthepublishedliteraturearetwosuchmodes.Afteridentifyingallprimarymodes,therelativeimportanceofeachmodeanditsphysicalcausecanbeanalyzed.Forexample,themostenergeticmodeistheinterannualmode(2-7yearperiod).Thismodeisknowntobeassociatedwiththe2-7yearElNino/LaNinacycle.TheaveragenumberofannuallandfallingTCsalongtheSECdecreasedby24%duringElNinoyears,butdidnotshowsignificantincreaseduringweakandmoderateLaNinayears.However,intenseLaNinayearsweregenerallyassociatedwithmorethanaveragelandfallingTCsalongtheSEC.TheeffectsofElNinoandLaNinaalsobecamemoresignificantwhenonlyhurricaneswereconsidered.ThesignificanceoftheeffectsofElNinoandLaNinaonlandfallingTCsandhurricanesindifferentUSsoutheastcoastalstatesshowedsignificantdifferences.

简介：ApplyingtothecollegeintheUnitedStatesfromanothercountrycanbeescitingandchallenging.Italsocanbefrustrating,butitneednotbedifficultifyougetaccurateinformationandfollowtherequiredprocedurescarefully.

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简介：1.TheState:GeneralConsiderationsScholarshavelongbeinginterestedinthestateandtherunningofit.Amongthem,therewerephilosophers,historians,sociologistsandanthropologists.WemaygoasfarbackastoConfuciusandLaoTze,ortotheGreekphilosophersPlatoandAristotle1,andifwewanttostayclosertoourtime,wecanmentiontheItalianpoliticalscientistMachiavelli,whowroteinthe16thcenturyIlPrincipe(ThePrince),

简介：文中作者进述了他在美国渡过的第一天，是愉快？是无奈？总之，这一天让作者认识了学习语言的必要性。

简介：Weshowhowquantumentangledbiphotonstatescanbeusedtorealizeghostscattering,anonlocalschemetoobtainscatteringinformationofanunknownobjectthroughthecorrelationmeasurementofthescatteringphotonsintwodifferentopticalpaths.WepresentaframeworktodescribethebiphotonghostscatteringprocessfromtheT-matrixformulaofthescatteringtheory.Wefindthescatteringinformationofatestobjectcanberetrievedfromeitherthetestarmorthereferencearm.Byadjustingthebiphotonstates,theghostscatteringpatternsmaybevariedfromthescatteringpatternoftheobjectinthetestarmtotheobjectinthereferencearm.

简介：FactorsaffectingtheU.S.Refractoriesindustry,suchusdecreasingdemand,mergers,anddecreasededucationarediscussed,alongwithmanufacturingstatistics(I.E.,annualvalueandproducttrends),indicatingthattheU.S.Markethasdeclinedforfivestraightyears.Researchactivitieshavechanged,withmoreemphasisonpractical,appliedprojects,whichhavecontinuedtoproduceimportantadvances.Manychallengesandopportunitiesremain,basedonthecurrentandfuturebusinessrequirements.

简介：WitnessingthedevelopmentandprogressofEastAsianintegration,especiallytheadoptionofthegoalofEastAsianCommunity,bothU.S.officialsandacademiccircleshavebeenshowingmoreinterestinandpayinggrowingattentiontothe

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