简介：InPekingUniversityComputerResearchInstitute(PUCRI)amethodofinputtingChinesesentencesbasedonwordshasbeendeveloped.Toreducethetroublesinchoosingonewordoutoftheotherscharacterizedbythesamefeature,grammaticalparsingtechniqueisappliedtothemethodandgoodresultshavebeenachieved.Thisarticledescribestheoutlineofthemethod.theprincipleofapplyinggrammaticalformulasandthebranch-cuttingalgorithmusedtospeedupthegrammaticalparsing.

简介：

简介：InthetenyearssincethepublicationofKrashen’stheoryonsecondlanguageacquisition(SLA),theroleofcomprehensibleinput(CI)inthelearning/acquiringofalanguagehasreceivedconsiderableattention(Krashen,1982,1985;Ellis,1991,1992;Long,1983,1985).Asaresultofthesestudiesresearchersnowagreeonthefollowingpoints.Exposuretoalanguagedoesnotleadtoacquisition;thepersonalaccountsofsomanylanguagelearnerswhohavespentmanyyearsinacountryorwhohavelistenedtoendlesshoursofradioandtelevisionwithoutbeingabletounderstandorspeakthelanguageattesttothisfact.

简介：Amethodhasbeendevisedtoanalyzemultilayerelectricallythickcircularmi-crostripantennaexcitedbyaprobe.Thecurrentontheprobeistakentobeuniform.Thismethodwasverifiedbyanalysisandexperimentofanelectricallythickcircularmicrostripan-tennawithanairgap.BasedonthefreespaceelectricdyadicGreen’sfunction,thefieldexpressionofanhorizontalelectricdipole(HED),whichislocatedatanypointofthemultilayermediaandpointsinanydirection,hasbeenderived.ByusingthisfieldexpressionandtheRichmondre-actionequation,anintegralequationintermsofelectriccurrentonthepatchisformulated.Byproperlychoosingcurrentexpansionmodes,thismethodcanbeusedforanelectricallythickmi-crostripantenna.Thetheoreticalresultsagreeverywellwithexperimentaldataforanelectricallythickcircularmicrostripantennawithanairgap.

简介：

简介：ThispaperstudiestheoperatingcharacteristicsofanM/G/1queuingsystemwitharandomizedcontrolpolicyandatmostJvacations.Afterallthecustomersareservedinthequeueexhaustively,theserverimmediatelytakesatmostJvacationsrepeatedlyuntilatleastNcustomersarewaitingforserviceinthequeueuponreturningfromavacation.IfthenumberofarrivalsdoesnotreachNbytheendoftheJ~(th)vacation,theserverremainsidleinthesystemuntilthenumberofarrivalsinthequeuereachesN.IfthenumberofcustomersinthequeueisexactlyaccumulatedNsincetheserverremainsidleorreturnsfromvacation,theserverisactivatedforserviceswithprobabilitypanddeactivatedwithprobability(1-p).Forsuchvariantvacationmodel,otherimportantsystemcharacteristicsarederived,suchastheexpectednumberofcustomers,theexpectedlengthofthebusyandidleperiod,andetc.Followingtheconstructionoftheexpectedcostfunctionperunittime,anefficientandfastprocedureisdevelopedforsearchingthejointoptimumthresholds(N~*,J~*)thatminimizethecostfunction.Somenumericalexamplesarealsopresented.

简介：Objectivesofthistaskaretoconductresearchonseismichazards,andtoproviderelevantinputontheexpectedlevelsofthesehazardstoothertasks.Othertasksrequiringthisinputincludethosedealingwithinventory,fragilitycurves,rehabilitationstrategiesanddemonstrationprojects.Thecorrespondinginputisprovidedinvariousformatsdependingontheintendeduse:aspeakgroundmotionparametersand/orresponsespectralvaluesforagivenmagnitude,epicentraldistanceandsiteconditions;orastimehistoriesforscenarioearthquakesthatareselectedbasedonthedisaggregatedseismichazardmappedbytheU.S.GeologicalSurveyandareincorporatedinbuildingcodes.Theusercommunityforthisresearchisbothacademicresearchersandpracticingengineerswhomayusetheseismicinputgeneratedbythesynthesistechniquesthataredevelopedunderthistaskforavarietyofapplications.Theseincludegroundmotionsforscenarioearthquakes,fordevelopingfragilitycurvesandinspecifyinggroundmotioninputforcriticalfacilities(suchashospitals)locatedintheeasternU.S.

简介：Inputtorqueisthemainpowertomaintainbipedalwalkingofrobot,andcanbecalculatedfromtrajectoryplanninganddynamicmodelingonbipedrobot.Duringbipedalwalking,theinputtorqueisusuallyrequiredtobeadjustedduetosomeuncertainparametersarisingfromobjectiveorsubjectivefactorsinthedynamicalmodeltomaintainthepre-plannedstabletrajectory.Here,aplanar5-linkbipedrobotisusedasanillustratingexampletoinvestigatetheeffectsofuncertainparametersontheinputtorques.Kine-maticequationsofthebipedrobotarefirstlyestablishedbythethird-ordersplinecurvesbasedonthetrajectoryplanningmethod,andthedynamicmodelingisaccomplishedbytakingboththecertainanduncertainparametersintoaccount.Next,severalevaluationindicesoninputtorquesareintro-ducedtoperformsensitivityanalysisoftheinputtorquewithrespecttotheuncertainparameters.Finally,basedontheMonteCarlosimulation,thevaluesofevaluationindicesoninputtorquesarepresented,fromwhichalltherobotparam-etersareclassifiedintothreecategories,i.e.,stronglysensi-tive,sensitiveandalmostinsensitiveparameters.

简介：Thecomputationoftherepresentativegroundmotions,tobeusedasinputforthedynamicanalysesofastruc-tureataparticularsite,canbeapproachedbyseveralmethods.Thechoiceoftheapproachdependsontwofactors:theda-taavailableandthetypeofproblemtobesolved.Thispaperreportstheexperienceoftheauthorsinapproachingaspecificcasestudy:theSouthernMemnonColossus,locatedinLuxor,Egypt.Theresultsareofinterestwhenthehazardanalysisestimationindevelopingcountriesandthesafeguardofculturalheritageareconcerned.Monumentshavetobetreatedasimportantstructures,duetotheirhistoricalandeconomicalvalue.Hence,standardproceduresofprobabilisticseismichaz-ardanalysisfortheseismicclassificationofcommonbuildingshavetobedisregarded.Ontheotherhand,theconsequencesofthecollapseofamonumentarenotcomparabletothoserelatedtostructuressuchasnuclearpowerplantsandlargedams,forwhichthedeterministicseismichazardanalysisprovidesastraightforwardframeworkforevaluationoftheworstcaseone,isadopted.Itsstochasticcomponentcancapturesignificantcharacteristicsofearthquakes,primarilythefrequencycontentswhichdependonthemagnitude(oftenreferredtoastheearthquakescalinglaw).

简介：Thedynamicinput-outputmodeliswellknownineconomictheoryandpractice.Inthispaper,theasymptoticstabilityandbalancedgrowthsolutionsofthedynamicinput-outputsystemareconsidered.Undersomenaturalassumptionswhichdonotrequirethetechnicalcoefficientmatrixtobeindecomposable,ithasbeenprovedthatthedynamicinput-outputsystemisnotasymptoticallystableandthecloseddynamicinput-outputmodelhasabalancedgrowthsolution.

简介：在这份报纸，我们与输入浸透，未知输入scalings和骚乱处理一个不明确的机器的操纵者的控制问题。为这个目的，一本模型参考书适应控制象一样(象MRAC一样)被用来处理输入浸透。模型引用是输入说马厩(ISS)并且由在要求的控制信号和输入浸透之间的错误开车。不明确的参数被使用机器的动力学的linear-in-the-parameters性质处理，当未知输入scalings和骚乱被non-regressor处理时基于的途径。我们的设计保证在靠近环的系统的所有信号被围住，并且追踪的错误收敛到取决于控制输入的预定界限的紧缩的集合。有二个关节的一个平面肘操纵者上的模拟被提供说明建议控制器的有效性。

简介：EnvironmentallyExtendedInput-Output(EEIO)tableshavebecomeapowerfulelementinsupportinginformation-basedenvironmentalandeconomicpolicies.National-andprovincial-level10tablesarecurrentlypublishedbytheNationalBureauofStatisticsofthePeople’sRepublicofChinaaccordingtowell-definedconventions.However,county-level10tablesarenotprovidedasarulebyofficialstatisticsorganizations.ThispaperconductsanoverviewofcompilingEEIOtablesforenvironmentalandresourcesaccountingatthecountylevelandthenanswersseveralquestions:First,whatkindofdatashouldbepreparedforthecompilationofcounty-levelEEIOtables?Second,howcanwesetupcomprehensiveEEIOtablesatthecountylevel?Third,regardingthesurveymethodsandtheindirectmodeling,whichoneshouldbechosentobuildEEIOtablesatthecountylevel?Finally,whatpolicyquestionscouldsuchatableanswer?EEIOtablesatthecountylevelcanbeusedtopredicttheeconomicimpactsofenvironmentalpoliciesandtoperformtrendandscenarioanalysis.

简介：

简介：Afterfouryears'extensivelyscramblingrivers'exploitationrightsbypowercompanies,thecountablehydropowerresourcesarealmostsharedup.Inwater-abundantsouthwesternregion,fivelargegenerationgroupsdelimitedtheirownspheresonlargerivers.Sharpprivateenterprisesavailedthemselvesofeveryopportunitytograspthetargetsonsmallandmediumrivers.Asnumerousinvestorsswarmed,hydropowerconstructionenteredarealhightideperiod.'Atpresent,theproportionofexploitedhydroenergyisapproximately20%oftheexploitablewaterenergyinChina.Itwillbeenoughforthedatumtobecloseto60%inChina,otherwisemoreproblemswithecologicalenvironmentwouldfollow.Thehydropowertobedevelopedshallbelimitedwithin350GW,andthisisthetop,'saidWangShucheng,MinisterofMinistryofWaterResources.'Excessivemarketizationislikelytoleadendlesstroubleinhydropowerconstruction.Incasetheinvestmentinahydropowerprojectfails,thedestroytoecologicalenvironmentareverydifficulttoberestored,'saidPengTubiao,chiefengineerfromChinaHydropowerandWaterResourcesPlanningandDesigninstitute.

简介：

简介：Weproposeaschemetopurifyentanglementoftwoatomsfromnot-too-impureentangledstatesbycheckingtheparityofthetwoatomsthroughthecavityinput-outputprocess.Astheparitycheckismadebymeasurementonsingle-photonpolarization,whichwouldnotaffecttheentanglementofthetwoatoms,ourschemehasthesuccessfulprobabilitydoubleofthatinapreviouswell-knownschemewithlinearopticalelements[Nature(London)410(2001)1067],andisinsensitivetothephotonlossandthedetectioninefficiency.Experimentalfeasibilityofourschemewithcurrenttechnologyisdiscussed.

简介：

简介：

简介：滑动模式控制的适应backstepping与输入浸透为不明确的非线性的系统的一个班被建议。一个命令过滤了途径被用来阻止输入浸透破坏神经网络(NN)的适应能力。控制法律和NN的适应更新法律在Lyapunov功能的意义被导出，因此稳定性能甚至在输入浸透下面被保证。建议控制法律对骚乱是柔韧的，并且它能也消除输入浸透的影响。模拟结果显示建议控制器有好表演。

简介：为有未知结构的非线性的系统的一个系统鉴定方法用短输入产量数据被介绍。方法简化原来的NARMAX方法。它为非线性的系统介绍更一般的模型结构。方法被采用获得模型术语的数据处理的组方法(GMDH)；参数。建议方法的有效性被一个典型非线性的系统与未知结构说明；缺乏的输入产量数据。