简介：ThepresentstatusofPPtechnologyinChinaispresented.ThroughareviewofsingleloopanddualloopPPreactortechnologyaswellasdevelopmentandutilizationofPPproductsitisconcludedthatimportofPPtechnologyshouldbebasedonthedemandofPPproductsandmarkettrendwithconsiderationoflocalconditions.TheexistingproblemsandfuturedevelopmentofPPtechnologyinChinaarediscussed.

简介：Inthispaper,adiscrete-timeanalysisofthethird-ordercharge-pumpbasedphase-lockedloops(CPLLs)ispresentedinthepresenceofloopdelay.Thez-domainanalysisoftheclosed-looptransferfunctionisderivedandcomparedwiththetraditionals-domainmethod.ThesimulationresultsunderSPECTREshowthat,duetothesamplingnatureofCPLL,thetraditionals-domainanalysisisunabletopredictitsjitterpeakingaccurately,especiallywhentheloopdelayistakenintoconsideration.Theimpactofloopdelayonthestabilityofthethird-orderCPLLsystemisfurtheranalyzedbasedontheproposedway.ThestabilitylimitofthewidebandwidthCPLLwithloopdelayiscalculated.Thecircuitsimulationresultsagreewellwithmathematicalanalysis.

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简介：Overthepasttwodecadesconsiderableprogresshasbeenmadeinunderstandingtheototoxiceffectsandmechanismsunderlyingloopdiuretics.Astypicalrepresentativeofloopdiureticsethacrynicacidorfurosemideonlyinducestemporaryhearingloss,butrarelypermanentdeafnessunlessappliedinsevereacuteorchronicrenalfailureorwithotherototoxicdrugs.Loopdiureticinduceuniquepathologicalchangesinthecochleasuchasformationofedematousspacesintheepitheliumofthestriavascularis,whichleadstorapiddecreaseoftheendolymphaticpotentialandeventuallossofthecochlearmicrophonicpotential,summatingpotential,andcompoundactionpotential.LoopdiureticsinterferewithstrialadenylatecyclaseandNat/Kt-ATPaseandinhibittheNa-K-2Clcotransporterinthestriavascularis,howeverrecentreportsindicatethatoneoftheearliesteffectsinvivoistoabolishbloodflowinthevesselssupplyingthelateralwall.Sinceethacrynicaciddoesnotdamagethestriavascularisinvitro,thechangesinNat/Kt-ATPaseandNa-K-2Clseeninvivomaybesecondaryeffectsresultsfromstrialischemiaandanoxia.Recentobservationsshowingthatreninispresentinpericytessurroundingstriaarteriolessuggestthatdiureticsmayinducelocalvasoconstrictionbyreninsecretionandangiotensinformation.Thetightjunctionsintheblood-cochleabarrierpreventtoxicmoleculesandpathogensfromenteringcochlea,butwhendiureticsinduceatransientischemia,thebarrieristemporarilydisruptedallowingtheentryoftoxicchemicalsorpathogens.

简介：Inthispaper,anewlooptransformationisproposedthatcanexpolitparalleisminloopswhichcannotbefoundbytraditionalmethods.Thenthemethodisextendedtoshowhowtoachievemaximumspeedupofloopsifthereareinfiniteprocessorsandhowtobalancetheworkloadofparallelsectionsinloopsifthereisfixednumberofprocessors.

简介：At-speedtestingusingexternaltesterrequiresanexpensiveequipment,thusbuilt-inself-test(BIST)isanalternativetechniqueduetoitsabilitytoperformon-chipat-speedself-testing.ThemainissueinBISTforat-speedtestingistoobtainhighdelayfaultcoveragewithalowhardwareoverhead.Thispaperpresentsanimprovedloop-basedBISTscheme,inwhichaconfigurableMISR(multiple-inputsignatureregister)isusedtogeneratetest-pairsequences.ThestructureandoperationmodesoftheBISTschemearedescribed.Thetopologicalpropertiesofthestate-transition-graphoftheproposedBISTschemeareanalyzed.Basedonit,anapproachtodesignandefficientlyimplementtheproposedBISTschemeisdeveloped.ExperimentalresultsonacademicbenchmarkcircuitsarepresentedtodemonstratetheeffectivenessoftheproposedBISTschemeaswellasthedesignapproach.

简介：与exascale来超级计算的时代，电源效率成为了最重要的障碍造一个exascale系统。Dataflow建筑学在为科学应用完成高电源效率有本国的优点。然而，最先进的dataflow体系结构没能为循环处理利用高并行。处理这个问题，我们建议一个pipelining环优化方法(PLO)，它在处理元素(PE)在环流动做重复dataflow的数组加速器。这个方法由二种技术，帮助建筑学的硬件重复和帮助说明的软件重复组成。在硬件重复执行模型，一个在薄片上循环控制器被设计产生循环索引，减少计算内核并且打为pipelining执行的一个好基础的复杂性。在软件重复实行模型，另外的环指令被论述解决重复相关性问题。经由这二种技术，准备好了每周期执行的指令的平均数字被增加使浮点联合起来忙。当这二种技术的硬件费用是可接受的时，模拟结果证明分别地，我们的建议方法平均由2.45x和1.1x在浮点效率超过静电干扰和动态循环执行模型。

简介：有在它的伴随模块的张肌产品的系数的概括的环Virasoro代数学的第一个cohomology组被显示小。结果被用来在概括的环Virasoro代数学上证明那个谎言是bialgebra结构是coboundary三角形。作者概括结果到概括地图Virasoro代数学。

简介：AnewmethodforconstructinginterpolatingLoopsubdivisionsurfacesispresented.ThenewmethodisanextensionoftheprogressiveinterpolationtechniqueforB-splines.GivenatriangularmeshM,theideaistoiterativelyupgradetheverticesofMtogenerateanewcontrolmeshMsuchthatlimitsurfaceofMwouldinterpolateM.ItcanbeshownthattheiterativeprocessisconvergentforLoopsubdivisionsurfaces.Hence,themethodiswell-defined.Thenewmethodhastheadvantagesofbothalocalmethodandaglobalmethod,i.e.,itcanhandlemeshesofanysizeandanytopologywhilegeneratingsmoothinterpolatingsubdivisionsurfacesthatfaithfullyresembletheshapeofthegivenmeshes.Themeshesconsideredherecanbeopenorclosed.

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简介：ThispaperintroducestherecentappearanceofacirculareconomyinsuchindustrializedcountriesasGermanyandJapanandoutlinesitsconceptandprinciples.Theauthoremphasizesthatacirculareconomyshouldbecomethebreakthroughpointforsustainabledevelopmentandwillenableashifttoasustainablesocietyof'doinglesswithless'awayfromthecurrenthigh-consumptionsocietyof'doingmorewithmore'

简介：<正>Inthispaper,wemakeacompletestudyoftheunfoldingofaquadraticintegrablesystemwithahomoclinicloop.MakingaPoincaretransformationandusingsomenewtechniquestoestimatethenumberofzerosofAbelianintegrals,weobtainthecompletebifurcationdiagramandallphaseportraitsofsystemscorrespondingtodifferentregionsintheparameterspace.Inparticular,weprovethattwoisthemaximalnumberoflimitcyclesbifurcatingfromthesystemunderquadraticnon-conservativeperturbations.

简介：Adistibutedoptimallocaldoubleloop(DOLDL)networkispresented.EmphasisislaidonthetopologyanddistributedroutingalgorithmsfortheDOLDL.Onthebasisofbuildinganabstractmodel,asetofdefinitionsandtheoremsaredescribedandproved.Analgorithmwhichcanoptimizethedoubleloopnetworksispresented.TheoptimalvaluesofthetopologicparametersfortheDOLDLhavebeenobtainedbythealgorithm,andthesenumer.calresultsareanalyzed,Thestudyshowsthattheboundsoftheoptimaldiameter(d)andaveragehopdistance(a)forthisclassofnetworksareand,respectively(Nisthenumberofnodesinthenetwork.「3≤N≤10~4).AclassofthedistributedroutingalgorithmsfortheDOLDLandtheimplementationprocedureofanadaptivefault-tolerantalgorithmareproposed.Thecorrectnessofthealgorithmhasbeenalsoverifiedbysimulating.

简介：Thisstudydefinesandassessestheselectionciiteriaforsuitableparticulatematerialstobeusedinanupflowbubblingfluidizedbed(UBFB)ordenseup-flowpowdercirculationsystemforsolarenergycaptureandstorage.Themaincriteriaidentifiedarebasedonthethermophysicalandthermomechanicalproperties,attritionbehavior,andtheconsiderationsofhealthandenvironmentalhazardsofthecandidatepowders.Finally,acostcomparisonandtentativerankingofthedifferentcandidatepowdersispresentedinadditiontoaweightedscoring.Significantscoringdifferencescanbeobservedbetweenthevariousmaterials.Olivinepossessesthemostfavorablecharacteristicsandappearstobetheparticulatematerialofchoiceforsolid/gassuspensionheattransferfluids.

简介：摘要本文主要围绕Loop代数上的非退化对称不变双线性型进行研究，构造了对称自对偶Loop代数并确定了一类对称自对偶Loop代数的极大可解对称自对偶子代数.

简介：Inthestrapdowninertialnavigationsystem,theFiberOpticalGyro(FOG)musthavehighprecisiontogiveaccuratenavigationinformation.Inthispaper,adigitalclosedloopdetectionmethodbasedontherampwavemodulatingtechnigueisintroduced.DSPandFPGAhavemanyadvantagesindigitalsignalprocessing.Inthedesign,byusingDSP,acomplexarithmeticoperationiscompletedtomeettheneedsofclosedloopcontrolofFOGwithinashorttime.AllkindsofcontrolsignalsareproducedeasilybyFPGA,underwhichDSPcouldworkproperly.CombiningtheDSPandFPGA,thedetectingmethodisimplementedsuccessfully.Intheend,theresultoftestandperformanceisgiven.FromtheresultwecanconcludethattheprecisionofFOGisimprovedandthenoisesarelimitedtoalowlevel.

简介：Thenon-minimumphasefeatureoftail-controlledmissileairframesisanalyzed.Threeselectionstrategiesfordesiredperformanceindexesarepresented.Anaccelerationautopilotdesignmethodologybasedonoutputfeedbackandoptimizationisproposed.Performanceandrobustnesscomparisonsbetweenthetwo-loopandclassicalthree-looptopologiesaremade.Attemptstoimprovetheclassicalthree-looptopologyarediscussed.Despitethesameopen-loopstructure,theclassicalthree-loopautopilotshowsdistinctcharacteristicsfromatwo-loopautopilotwithPIcompensator.Boththetwo-loopandthree-looptopologiescanstabilizeastaticunstablemissile.However,thefiniteactuatorresourceisthecrucialfactordominatingautopilotfunction.

简介：瞄准靠近环的水系统，由方法关上某些subcircuit，并且解决尖网络，另外的subcircuits的计算流动偏差，然后与各种各样的因素分析稳定性的变化的规则，后面的结论被获得：当在主要管子中减少抵抗时，subcircuits的增加的抵抗，系统稳定性能被改进。由改变力量的集中的规定没在系统稳定性上有影响；由改变电阻愿望减少系统稳定性的集中的规定。泵特征曲线影响系统稳定性，扁平的特征的稳定性比陡峭的优异。为直接回来系统(医生)，来自热来源最远的subcircuit的稳定性是最糟。为反向的回来系统(RRS)，在管子网络的中间的subcircuit的稳定性有最糟的稳定性。总的来说，RRS的稳定性低于医生关键词靠近环的水系统的-稳定性-流动偏差-直接回来系统-反向的回来系统CLC数字TK172

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简介：设计师考虑到生活中常用的两种蜡烛直径不同，将LOOP烛台设计为可以兼容两种尺寸。材料采用粉末式铸铁涂层，质朴而耐用，并目有五种颜色供选择。