简介：ThechemicalcompositionandmicrostructureofTibetanmicrocrystallinemagnesitewerestudiedbymeansofXRF,XRDandFESEM.Itisfoundthatthemicrocrystallinemagnesitehasuniformlydistributedgrains,mostlyintherangeof2-4μm,andtheMgOcontentis47.80%.Infusedmagnesia,thedrusesarecolorlesstransparentpericlasemegacrystswithoutimpurity,whilethecrustsandiswhite,withahighMgOcontentupto97%-99%.Thepericlasecrystalsarebig,appearingasfacedandstep-growthmorphology.Massivesecondarylongcolumnarpericlaseiscrystallized.

简介：欧洲最大的年度音响展会HIGHEND2005于5月5日至8日在德国的慕尼黑举办。来自世界各地，包括中国的众多厂商在这里展出了他们的新产品，其中不少是首次亮相。虽然是商业性的展会，但这个展会与CES熙熙攘攘、火爆热闹的氛围大不相同，似乎更希望营造出一种恬静舒适的环境，让人能够真正静下心来听听音乐。

简介：ThiscommentaryisbasedontheworkofCooper,Davis,andVanVliet(2016)andthecommentaryfocusesonwhatproblemhigh-frequencytradingposes.Itlistskeyliteratureonhigh-frequencytradingthatismissingandpointsoutthatthepokeranalogytodefenddeceptioninfinancialmarketsisweakandmisleading.Thearticleelaboratesonthenegativeimpactcreatedbyspoofingandquotestuffing,thetwotypicaldeceptivepracticesusedbyhigh-frequencytraders.Therecentregulationsregardinghigh-frequencytrading,inresponsetothe“FlashCrash”of2010,arepreventive,computerizedandmoreeffective.Theyreflectethicalrequirementstomaintainfairandstablefinancialmarkets.

简介：Thehighpressureequationofstateforcarbonisconstructedbysomesimplephysicalmodels.Forsolidstate,amultiphaseequationofstateisconsidered,whichincludesfoursolidstates.Forliquidstate,theliquidperturbationtheoryofCRISmodelisused.Inthehightemperature,theelectroniccontributionisobtainedbytheionizationequilibriumtheory.Theresultofourcalculationbasedontheabovemodelsiscomparedwiththefirstprincipledensityfunctionalcalculationandtheothermodels.TheHugoniotandthephasediagramofcarbonarealsocomparedwiththeexperiments.Theresultsaresatisfactory.

简介：在这份报纸，我们在场Tianhe-2互连传递服务的网络和消息。我们描述路由器和网络接口芯片的体系结构，并且加亮有效地支持高效通讯的一套硬件和软件特征，在遥远的直接存储器存取上变化，集体优化，硬件启用可靠端对端的通讯，用户级的消息过去服务，等等。测量硬件表演结果也被介绍。

简介：Theharmonicanalysismethodbasedonhighandlowwaterlevelsisdiscussedinthispaper.Inordertomakefulluseoftheinformationofhighandlowwaterobservations(thetimederivativeofwaterlevelattheobservationtimeiszero),theweightcoefficient,w,isintroducedtocontroltheimportanceofthepartrelatedtothisinformationintheerrorformula.Themajordiurnalconstituents,O1andK1,andsemi-diurnalconstituents,N2,M2andS2areselecteddirectlyfromthemonthlydataanalysis,andsomeotherimportantconstituents,P1,v2andK2,areincludedastheinferredconstituents.Theobtainedharmonicconstantsofthemajorconstituentsareveryclosetothoseobtainedfromtheanalysisofhourlydata,andthisshowsthathighandlowwaterdatacanbeusedtoextracttidalconstantswithhighaccuracy.Theanalysisresultalsoshowsthattheinferenceandtheweightingcoefficientareimportantinthehighandlowwaterdataanalysis,anditissuggestedthatw≥1shouldbetakeninmonthlyhighandlowwaterdataanalysis.Thisanalysismethodcanbeuseddirectlytoanalyzealtimetricdatawithw=0.

简介：Withtheloadingtestequipmentofcorrosionfatiguespeciallydesigned,thecorrosionfatiguecharacteristicsofhighperformanceconcrete(HPC)withstandingtheinteractionofthirdpointfatigueloadingandNa2SO4solutionwereinvestigatedandanalyzed.Theexperimentalresultsindicatethatwater-binderratioevidentlyinfluencesthecorrosionfatiguecharacteristicsofHPC,andamoderatequantitativefinemineraladmixtureenhancesthecorrosionfatigueresistanceofHPC.Theeffectismoresignificantwhenflyashandsilicafumeareadded.

简介：计划容器处于民用、军事的状况广泛地被使用。由于他们的高速度，计划容器的运动是复杂的。以便预言计划容器的运动，分析以高速度计划容器的水动力学表演是重要的。计算液体动态方法(CFD)被建议了计算计划容器的水动力学性能。在很传统的CFD途径，然而，模型测试或实验公式被需要在计算前获得计划容器的跑的态度。这份报纸论述一个新CFD方法计算计划容器的水动力学力量。数字方法基于平均Reynolds的海军司烧(RANS)方程。液体(VOF)的体积方法和six-degrees-of-freedom方程被使用。一个有效过程被介绍在数字模拟解决数字分叉问题。与试验性的结果相比，数字模拟结果显示跑的态度和水动力学性能能以高速度被预言很好。

简介：Correctextractionoftheultra-large-scaleintegrated(ULSI)interconnectcomponentsathightfrequenciesisveryimportantforevaluatingelectricalperformancesofhigh-speedULSIcircuits.Inthispaper,theextractionoftheinterconnectresistanceathighfrequenciesisderivedfromtheOhm′slawandverifiedbythesoftwareFastHenry.Theresultsarealsocomparedwiththoseofanotherresistanceformulaoriginatedfromtheeffectiveareaofthecurrentflowing.Theapplicabilityofthesetwoformulaeisdiscussed.Theinfluenceoftheinterconnectgeometryontheresistanceathighfrequenciesisstudied.Thecomputationindicatesthattheeffectoffrequencyontheresistanceisweakwhentheskindepthislargerthanhalfoftheshortsideoftherectangularinterconnectcrosssection.Withfurtherincreaseoffrequency,theresistanceincreasesobviously.Resultsimplythatconductorwithasquarecrosssectionexhibitsthelargestresistanceforrectangularconductorsofconstantcrosssectionarea.

简介：

简介：Afterlessthanayearofoperation,theBaBarexperimentatSLAChascollectedalmost100millionparticlecollisioneventsinadatabaseapproaching165TB.Around20TBofdatahasbeenexportedviatheInternettotheBaBarregionalcenteratIN2P3inLyon,France,andaround40TBofsimulateddatahasbeenimportedfromtheLawrenceLivermoreNationalLaboratory(LLNL),BaBarCollaboratorsplantodoubledatacollectioneachyearandexportathirdofthedatatoIN2P3.SowithinafewyearstheSLACOC3(155Mbps)connectionwillbefullyutilizedbyfiletransfertoFrancealone.Upgradestoinfrastructureisessentialanddetailedunderstandingofperformanceissuesandtherequirementsforreliablehighthroughputtransfersiscritical.Inthistalkresultsfromactiveandpassivemonitoringanddirectmeasurementsofthroughputwillbereviewed.Methodsforachievingtheambitiousrequirementswillbediscussed.

简介：

简介：InordertoobtainhigheremissionperformancethanthatofatraditionalM-typecathode,wehavedevelopedanewtypeimpregnateddispensercathode.Thenewcathodeisimpregnatedwithanewactivesubstancewithmolarratioof26BaO·29SrO·8Sc2O3·7CaO·Al2O3.Thispaperintroducestheemissionperformance,surfaceactivematerial,andworkfunctionofthenewcathode.At1100℃B,theDCcurrentdensityandpulsecurrentdensityare30.6±1.0A/cm2and171.6±2.8A/cm2,respectively,2.1and5.4timesofthatofanM-typecathode.Theworkfunctionofthenewcathodeis1.668±0.002eV.HighconcentrationO-Al-Sc-Sr-BaandO-Al-Sc-Baarefoundintheporesandatporeedges,respectively.Bycomparingtheemissionperformancesandsurfacecharacteristicsofas-polishedandas-cleanedcathodes,itisproposedthat,theemissionaroundporeendsformsthemajorpartofthetotalemissionforthenewcathodes.

简介：活动区是High/Scope课程的主要组成部分,我国幼儿园的活动区是在学习High/Scope课程的理念与实践基础上设立的。本文重温了High/Scope课程的灵魂——主动学习的主要特质,认为幼儿教师要把握High/Scope课程的精髓,就必须在活动区活动中注意内在动机、充分活动、"正确"的儿童、关键经验和教师支持等五个方面的问题。

简介：

简介：ThispaperdescribesafullchannelTVmodulatorforallTVsystems,whichhasbeendevelopedsuccessfully.ItemploysadvancedtechniquesuchasPLLfrequencysynthesizerwithmicrowaveintegratedcircuit,andwidebandmicrostripVCOanddigital-analogcombinedintegratedcircuits.Thekeytechniqueofthemodulatorissettledsuccessfully.AllthespecificationsofthemodulatoragreewithTechnicalStandardofChina,whicharetestedbytheauthorityofChina.

简介：结合的基于聚合物的太阳能电池是寻找在最后一十年的持续、可更新的精力来源的最有希望的设备之一。它是最年轻的领域无机的太阳能电池研究并且目前也当然是最快的成长的。Inaddition，为基于聚合物的太阳能电池与的关键因素高效率是发明新材料。器官的太阳能电池在应用在制造和灵活性由于它的低费用吸引了重要研究和商业兴趣。然而，他们受不了相对低的变换效率。高效率聚合物太阳能电池技术的意义和概念的摘要被介绍。

简介：Inordertoresearchthetemperaturedistributionandmechanicaldeformationofslabbulgingduringhighspeedcontinuouscasting,mathematicalmodelshavebeendevelopedtoanalyzethethermalandmechanicalbehavioroftheslab.Thethermalhistoryoftheslabhasbeenpredictedbyatwo-dimensionaltransientfiniteelementheattransfermodel,whoseresultsserveastheinputtothestressmodel.Thestressmodelhasbeenformulatedforatwo-dimensionallongitudinalplane.Inthiscase,themaximumtensilestrainduringthebulgingprocessislocatedatthesolidificationfrontjustpastthetopoftheupstreamroll,whichmaycontributetocrackformation.Themaximumtensilestressesarelocatedatthecoldsurfaceinthemiddleofthetwoback-uprolls,justatthepointofthemaximumbulging.Stressesnearthesolidificationfrontaresmallbecauseofthehightemperatureswhichproducelowerelasticmodulusvalues.Finally,theeffectofthecastingspeedonthebulgingdeformationisdiscussed.

简介：我们开发基于E5071B向量网络分析器(VNA)渗透雷达系统(LANRCS-GPR)的高分辨率地面。这个系统利用一条宽带和渗透雷达系统的可调节的频率领域地面并且与极端宽带、高的精确测量增加一个网络分析器的特征。并置减少构造费用并且使系统容易膨胀的系统控制采用LAN模式。渗透雷达系统的高分辨率地面与高计算效率用F-K移植执行实时成像。系统的实验结果显示LANRCS-GPR系统高提供分辨率和精确，高signal-to-noise比率，和大动态范围。而且，LANRCSGPR系统灵活、可靠操作与对容易扩展系统函数。LANRCS-GPR的研究和开发为渗透雷达生产的未来频率域地面提供理论、试验性的基础并且能也与为电磁波研究和电磁的探索收集精确，庞大的信息能力，宽应用程序，和方便操作的高数据用作一个试验性的平台

简介：