简介：ＯＺＯＮＥＶＡＬＬＥＹＯＶＥＲＴＩＢＥＴＡＮＰＬＡＴＥＡＵＺｈｏｕＸｔｕｊｉ（周秀骥）ａｎｄＬｕｏＣｈｃｏ（罗超）ＯＺＯＮＥＶＡＬＬＥＹＯＶＥＲＴＩＢＥＴＡＮＰＬＡＴＥＡＵＺｈｏｕＸｔｕｊｉ（周秀骥）ａｎｄＬｕｏＣｈｃｏ（罗超）（ＣｈｉｎｅｓｅＡｃａ...

简介：Aeratorisanimportantdeviceforreleaseworksofhydraulicstructureswithhigh-speedflowinordertoprotectthemfromcavitationdamage.Thiskindofprotectingeffectisrelatedcloselytocavitylengthbelowtheaerator,whilethecavitylengthisdominatedbytheemergenceangleovertheaerator.Thereforeitiscrucialtodeterminethisangleaccurately.Inthepresentpapertheaffectingintensitiesofflowdepthandthefluctuatingvelocityonthisanglewereanalyzedthroughtwointroducedparameters.Furthermore,theimprovedexpressionsofemergenceangleestimation,forbothramp-typeandstep-typeaerators,werepresentedbymeansof68setsofexperimentaldatafrom6projectsbasedonerrortheory.Theresultsshowedthatthepresentmethodhashigheraccuracythanthepreviouslyreportedmethods.

简介：理想如果，我戒指R是强烈分离的因为所有有限地产生了射影的R模块A，有A=AI和B=BI的B2AAB，那么B。我们在这份报纸证明常规理想我如果并且仅当，一枚戒指，R是强烈分离的每1+I令人满意(1-a)Rr(a)是单位常规的，如果并且仅当每1+I令人满意(1-a2)Rr(2)是单位常规的，如果并且仅当每1+I令人满意的R(1-a)R=Rr(a)是单位常规的，如果并且仅当每1+I令人满意的R(1-a2)R=Rr(2)是单位常规的。

简介：TherelationshipbetweenChinaandtheUnitedStatesisthemostimportantbilateralrelationsintheworld.Thoughbeingthemostcomplicatedrelationship,ithasbeenmanagedasthemostsuccessfuloneintheworld.Intermsofpopulation,

简介：根据HarIisInteractive和ForceNineConsulting公司对大公司无线产品购买和使用模式的调查表明，尽管大公司对RFID和GPS应用的投资很少，但是这两个应用领域将在下一轮大公司签订的无线产品合同中占据相当比重，大约产生10亿美元的年收入。

简介：Inthispaper,ananalyticaltechniqueispresentedfortimedomainanalysis(transientandsteady-stateresponse)ofperturbedPWMpush-pullDC-DCconverterusinginterestingcorollaryonKharitonov'stheorem.ThemainadvantageoftheproposedanalysisisthateventhoughthetransferfunctionmodelofaPWMpush-pullDC-DCconverterisperturbed,thecompleteanalysishasbeendoneonalineartransferfunctionmodelofaPWMpush-pullDC-DCconverter.TheproposedanalysisisverifiedusingMATLABsimulation.Thisanalysiswillbeverymuchusefultopowerelectronicsengineers,sincethetechniqueisverysimpleandcomputationallyefficientandeasilyapplicableinpreciseapplicationssuchasaerospaceapplications.

简介：1PUSHVOD技术背景“数字电视是路，增值业务是车”。全国的数字电视转换工作正如火如荼地开展，面对如此大的前期投入，广电部门如何收回成本，怎样让广大人民群众在享受视频冲击之外，感受数字电视带来的便利，这是整个数字电视产业人需要共同思考的话题。纵观多年来电信行业在增值业务上获得的巨大收益，

简介：WeiBenhua,Vice-AdministratorofStateAdministrationofForeignExchangestatedthatcapitalaccountmanagementpolicybeingstudiedrecentlyandtobeissuedfocusesoncapitaloutflowandwithnewmeasurescomingon,capitalaccountinChinawillbefurtherliberalized,thuscreatingenvironmentforcapitalflowcrosscountriesanddevelopmentofcapitalmarketinChina.

简介：growth.According ,China’s ,growth. 

简介：Thetransitionfromthebiexcitontotheexcitoncanturnoverthedirectionoftheelectricdipoleofapolymericmolecule.Thisturning-overactioncombinedwiththephotoinducedpolarizationreversioncanbeusedasaswitch.Theswitchingspeedisgovernedbytherelaxationtimeoftheturning-overprocess,whichcanbedeterminedbyadynamicalsimulation.

简介：

简介：

简介：Quantumalgorithmsbringgreatchallengestoclassicalpublickeycryptosystems,whichmakescryptosystemsbasedonnon-commutativealgebraicsystemshoptopic.Thebraidgroups,whicharenon-commutative,haveattractedmuchattentionasanewplatformforconstructingquantumattack-resistantcryptosystems.Aringsignatureschemeisproposedbasedonthedifficultyoftherootextractionproblemoverbraidgroups,whichcanresistexistentialforgeryagainsttheadaptivelycho-sen-messageattackundertherandomoraclemodel.

简介：ManyKoreanEnglish-languageteachersaresouringover(为……而烦恼)theplanningofthenation’sEnglisheducationsystemasmanyof

简介：

简介：UnitedNationsSecretaryGeneralKofiA.AnnanisgoingtocompletehissecondtermofofficebyDecember31thisyear.Althoughthedayissometimeaway,competitionforthepositionofthenextsecretarygeneralhasunfoldedwithinandoutsidetheUnitedNations.Giventheimportanceofthepostwhichhasabearingontheorientationandfuturedevelopmentoftheorganization,andduetothedifferentapproachesandpoliciestakenbythepartiesconcerned,thereisboundtobeasharpcontentionamongthevariousparties.

简介：Thenecessitytodistributethedataoverthewideareanetwork(WAN)tothephysicists'homeinstituteswillincrease,andtheeffectiveutilizationofthenetworkbecomescrucial,However,networksinthefutureWANwilltypicallyhavealargebandwidthatanorderofgigabitpersecond,withalatencyofseveralhundredssecondssothatthelargebandwidth-delayprodeuctextendstotensofmegabytesandnumerousproblemsareencountered.suchnetworksarecalled"longfatnetworks(LFNs)"Inordertostudythedatatransferoperatingonalongfatnetwork,wehavebuiltthePCclustersconnectedwiththerouterwhichcansimulatebandwidthlimitations.delays,packetlosses,andmultipatheffects.thisrouterisrunningonFreeBSDwithDUMMYNETkerneloption.Onthesemachineswehavemeasuredtheperformanceofthebulkdatatransfterwithnumerousconditionsandstudiedtheeffecienttransftermethods.

简介：让R是一枚任意的有限可交换的本地戒指。在这份报纸，我们在是多项式功能的R上为功能获得一个必要、足够的条件。在这份报纸前，为是一个多项式的功能的必要、足够的条件在一些特殊有限可交换的本地戒指上工作被获得。关键词多项式功能-有限可交换的本地戒指-概括Witt多项式先生(2000)题目分类12E10这个工作被NSFC(号码10128103)支持

简介：Europeisnowfacingadifficulttime,withasluggisheconomy,refugeecrisis,frequentterroristattacks,plusBrexit.Whatalotofpeopleviewedasarichandsafeparadisehasnowturnedouttobesomethingelse.Althoughthedebtcrisisiscurbedatthemoment,economicproblemsremainandwillgiverisetomorecrises.Therefore,Europe’scrisesarefarfromover.Inasense,theyarejustbeginning.

简介：Asacomplicatedconceptwithethicalimplications,equityorfairnessinthefieldofclimatechangemitigationconcernstherelationsnotonlybetweenindividualhumanbeingsbutalsobetweenhumanbeingsandthenature.Inthispaper,afterthereviewofequitybetweenindividuals,marketandnon-marketattributesofemissionsrightsaredistinguishedanddiscussed.Basedontheargumentofequalpercapitaemissionsrights,threetypesofemissionsrightsandtheconceptofminimumemissionsrightsassocialsecurityareproposed.