简介：在毫米波浪(mmWave)巨大多重输入多重产量(MIMO)系统因为高硬件费用和高电源消费，传统的充分数字的beamforming(DBF)不能容易被实现。同时，与阶段shifters被实现的模拟beamforming有高可获得性，但是承受差的性能。认为上面的优点是二，在可得到的反复的优化算法能近得到性能到充分数字的处理的地方，一个潜在的答案是设计适当混合类似物和数字beamforming结构，但是解决这个稀少的优化问题面对高计算的复杂性。搜寻混合beamforming(HBF)的关键挑战在利用交易在之间的矩阵谎言光谱效率性能和计算复杂性。在这份报纸，我们基于天线数组反应(AAR)建议一个asymptotically单一的混合precoding(AUHP)算法解决HBF优化问题的性质。第一，我们让最佳的直角的模拟、数字的beamforming矩阵由考虑在绝对值依靠隧道路径获得AAR矩阵是asymptotically单一的。然后，一基于递归改进了同时直角的匹配的追求(SOMP)算法被采用精制混合联合。数字结果证明我们的建议AUHP算法启用更低的计算复杂性与可以忽略光谱效率表演降级。

简介：Alow-diffusionpreconditioningRoeschemewithanadjustableparametertocontrolthenumericaldissipationisproposed.Thisschemereflectstherealphysicaldissipationintheextremelylow-speedregion.Thepreconditioningparameterinschemeisimprovedbylinearcut-offandcorrectionfactor.Thenumericalresultsoflow-Mach-number/low-Reynolds-numbersteadysolutionsofviscousflowspastacircularcylinderandpastaNACA0012airfoilshowtheefficiencyofthenewscheme.

简介：ThecorrosionbehaviorofaweatheringsteelSPA-Candtwoacidresistancesteels(S-TEN1andND)insulfuricacidsolutionwasinvestigatedbyusingpotentiodynamicpolarizationandweightlossmeasurementtechniques.Bothpotentiodynamicpolarizationandweightlossmeasurementtestsindicatedthatcorrosionresistanceofthesethreealloysteelswasasfollows:ND≈S-TEN1>SPA-C.Surfaceanalysisofthecorrodedsamplesconductedaftertheimmersiontestindicatedthattwolayerswereformedonthesubstrates,withtheouterlayercomprisingFeSO_4·H_2Oandtheinnerlayermainlycomprisingironoxides.TheadditionofCu,Cr,andSbrefinedthecorrosionproductsandimprovedtheadhesionabilitybetweentherustlayerandthesubstrate.

简介：Sincereformandopeningupandinrecentyearsinparticular,China'soverallnationalstrengthhasbeengrowingnoticeably.ThespeedofChina'sdevelopmenthasattractedworldwideattention.Itsaggregatenationalstrengthisalreadyamongthetopfewintheworldwithamomentumofcontinuousgrowing.In

简介：Experimentsonsonictransmissionshowthataslabstonecandirectlytransmitpartoftheenergyofawaveexcitedbyknockingorbyatransducerintotheair.Theotherpartofthewaveenergycangeneratethenormalmodeofvibrationontheslabstoneandexcitemeasurableacousticsignalsintheair.Thedominantfrequencyisrelatedtothesizeoftheslabstone.Theseresultsindicatethattheacousticemission(AE)inrockalsodisplayssimilarbehaviorifthesourceisshallow.Itisdemonstratedthatwiththenucleationandpropagationofcracks,thedominantfrequencyoftheradiatedwavewillbelower.Whenthefrequencybecomesverylow,thewavecanbetransmittedthroughtherockintotheairandbereceivedbyamicrophone.Accordingtothetheoryofsimilarityofsize,therewillbelow-frequencywavesbeforestrongearthquakesbecauseofnucleationofcracks,whichcanbereceivedbyspeciallow-frequencytransducersorinfrasonicdetectors.Beforeearthquakes,themechanismofprecursorscouldbeverycomplicated.Theymightbeproducedbyplasticcreeporattributedtoliquidsbutnotbrittlefractureinmostcases.Sotheperiodsoftheproducedwaveswillbelonger.Thisperhapsaccountsforthelackofforeshocksbeforemanystrongearthquakes.

简介：Chinaachievedmajorprogressinlow-carbondevelopmentduringtheperiodofthe11thFiveYearPlan(2006-2010).Theincreasingtrendofenergyintensityandcarbonintensityoftheeconomyasseenpriorto2005wasreversedtoasharpdecreasingtrend,leadingtoa19%decreaseinenergyintensityand21%decreaseincarbonintensityinfiveyears.Theenhancedenergyefficiency,mostlyduetoefficiencyimprovementinpowerandmanufacturingsector,isthemajordriverofthedecreaseincarbonintensityoftheeconomy.Thedevelopmentofrenewableenergy,despiteitsimpressivegrowthrate,playedaminorrolebecauseofitssmallshareintheenergymixofthecountry.Energycon-sumptionandenergy-relatedcarbonemissionsperunitofareainbuildingcontinuedtogrowatalesserrate,which,combinedwiththefastgrowthoftotalbuildingvolume,ledtofastgrowthintotalenergyconsumptionandcarbonemissionsinthesector.Similartrendisobservedinthetransportationsectorwhosetotalenergyuseandcarbonemissionscontinuedtogrowfastdespiteslightimprovementinenergyefficiency.Agriculturalenergyuseexperiencedaslightchangeandforestrymadeamajorcontributiontocarbonsinks.Policyandinstitutionalinnovationshelpedbuildasolidsystemofrulesforlow-carbondevelopment.Improvingcosteffectivenessofthesystemremainsamajorchallengeforthenextfiveyearplanperiod.

简介：Inrespondingtoglobalclimatechange,theideaoflow-carboneconomyemergesasthetimesrequire.Developinglow-carboneconomyisbasedontheconstructionoflow-carbonsociety.Thesocalled'two-orientationsociety'(resourcesconservationorientatedsocietyandenvironmentalfriendlyorientatedsociety)istheconcreterepresentationoflow-carbonsocietywithChinesecharacteristics,andanactualactionforChinaindevelopinglow-carboneconomy.Basedonurbanagglomeration,thepaperdiscussesthemeaningofandtheroutetolow-carbonsocietywhichwouldbetterreflecttheintrinsicrequirementsofsuchasociety.

简介：TheBritishgovernmentinitiatedtheconceptoflow-carboneconomyinits2003WhitePaperonenergy,whichconstitutedaneconomicmodelforhighereconomicoutputwithlownaturalresourceconsumptionandlowenvironmentalpollution.Since

简介：Thispaperdescribesthedischargecontroltechniqueonboundaryusedintwomodels,oneisthemodelofhotwaterdrainninginDayawanNyclearPowerPlant,Guangdong,andtheotheristhemodelfortrainhingthesandbarattheGuanheEstuary,Jiangsu.Manyyearsofapplicationshowsthatthistechniquehastheadvantagesofgoodreliability,repeatabilityandvalidity.Thespeedometerofhydrogenbubbleisalsointroducedinthispaper.Thedevicecandisplayandstoretracinglinesinacomputer,andhelpoperatorstoobtainthevalueanddirectionoftransientvelocityofanonsteadycurrent,thus,theproblemofmeasurmentoflowcurrentvelocityintidalmodeltestsissolvedandtheautomationofthemeasurementofcurrentvelocityisrealized.

简介：ObjectiveToassesstheutilityoflow-andhigh-frequencytympanometryinthediagnosisofmiddleeardysfunctioninChineseinfants.MethodsTympanogramswereobtainedwith226Hz,678Hzand1000Hzprobetonesfrominfantsaged5-25weekswithnormalauditorybrainstemresponses(ABRs)(15infants,30ears)andwithprolongedwaveIlatencies(17infants,20ears),suggestingmiddleeardysfunction,usingaGSITympstarmiddleearanalyzerVersionII.ResultsThesingle-peakedtympanogramwasthemostcharacteristictypeinbothgroupsandseenin25ears(83.3%)inthenormalABRgroupandin18ears(90%)inthedelayedwaveIgroup,respectively.Thepeakpressure,peakcompensatedstaticacousticadmittanceandgradientof226Hztympanometrywereofnosignificantdifferencesbetweenthetwogroups.The678Hztympanogramsofadmittance,susceptanceandconductancedemonstratednon-peak,single-,double-andtri-peakedpatternsinbothgroups.TheagreementbetweenABRsand678Hztympanogramsofadmittance,susceptanceandconductancewere70.0%,58.0%and64.0%(kappa=0.324,0.234and0.118)respectively.For1000Hzprobetone,admittance,susceptanceandconductancetympanogramsshowedsinglepeakedpatternsin28(93.3%),25(83.3%)and26(86.7%)ofthe30normalears.Admittance,susceptanceandconductancetympanogramsusingthe1000Hzprobetonewereflatin15(75%),17(85%)and13(65%)oftheearsininfantswithprolongedwaveIlatencies.For1000Hzadmittance,susceptanceandconductanceTympanograms,theagreementbetweentympanometryandABRresultswere90.0%,92.0%and86.0%withkappaat0.783,0.831and0.690,respectively.Conclusion1000Hzprobetonetympanometryisapromisingmiddleearfunctiontestforinfantsof1-6monthsage,while226Hzand678Hzprobetonesarelessefficientindetectingmiddleeardysfunctionininfants.

简介：在这篇论文，我们为在NoC(薄片上的网络)降低通讯的潜伏建议一种技术。这种技术，能支持服务(QoS)的二质量，，保证产量(GT)和尽力销售()，基于把一个更宽的连接切成更狭窄的连接在NoC增加产量和减少潜伏。另外，减轻同步并且减少串音，我们使用为更小的公共汽车编码的1-of-4。更加编码为建议NoC建筑学的使用降低潜伏为并且GT包。另外，当连接的动力消耗量被减少时，带宽被增加。

简介：Objective:Todetecttheactivatedexpressionoftelomeraseincondylomaacuminatalesionsinlow-risk(6/11)andhigh-risk(16/18)humanpapillomavirus(HPV)infectionandexaminetheroleplayedbytelomeraseintheoccurrence,developmentandcarcinomatouschangeofcondylomaacuminata.Methods:AssayingtheexpressionoftelomeraseandthetypeofHPVindamagedskinof42CApatientsandnormalskinof30healthycontrolindividualsthroughtelomeraserepeatamplificationprotocol(TRAP)andpolymerasechainreaction(PCR).Results:Inallthenormalskincontrols,PCRforHPVwasnegativeandonly16.7%ofsampleswerepositiveforTLMAexpression;inCAlesions,HPVtestingwaspositiveinall(32caseswerelow-risk,3werehigh-risk,and7wereofmixedtype)andallwerepositiveforTLMAexpression.Conclusion:TLMAmaybeactivatedbyHPVinfection,andinturncausethehyperplasiaofepidermalcells.ItwasalsoindicatedthatHPV,especiallyhighrisktypes,canactivateTLMA.TheactivationofTLMAmayplayanimportantroleinabnormalhyperplasiaandcarcinomatouschangesinCAlesions.

简介：TensileimpactexperimentsofEC8.0-24×7glassfiberbundlesatdifferentlowtempera-turesT（14℃,-40℃and-100℃）andstrainratesεwerecarriedout,andcompletestress-straincurveswereobtained.Withintherangeoftheexperimenttemperaturesandstrainrates,itisfoundthattheinitialmodulusE,theultimatestrengthσmaxandtheunstablestrainεboftheglassfiberbundlesallincreasewithatanidenticalT.Atanidenticalε,withthedecreaseofT,Eandσmaxincrease;butεbincreaseswhen14℃>T>-40℃anddecreaseswhen-40℃>T>-100℃.Thestrain-rate-andtemperature-depen-dentbimodalWeibullstatisticalconstitutivetheorywasadoptedforthestatisticalanalysisoftheexperimentalresults,andtheWeibullparametersofsinglefiberwereobtained.TheresultsshowthatthebimodalWeibulldistributionfunctionissuitabletorepresentthestrengthdistributionoftheglassfiberatlowtemperatureanddifferentstrainrates.ThedifferencesinthemechanicalpropertiesbetweenEC8.0-24×7andEC5.5-12×14glassfiberbundleswerealsodiscussed.

简介：二种Mn-Si-Mo低碳钢被设计在热卷的低碳bainitic的微观结构和性质上学习Mn的效果钢。到生产花费了的还原剂，0.13%的一个很低的瞬间内容两个都被加在一起钢。在热滚动以后，样品的机械性质被测试。微观结构被光显微镜和传播电子显微镜观察并且分析。结果证明测试的钢的力量随Mn的增加增加内容，当延伸减少时。当Mn内容增加时，bainite微观结构增加。结果能为作文提供一个理论基础设计和低费用的工业生产低碳bainitic钢。

简介：

简介：Anewisolatorcomposedofasteelropespringandamagneto-rheological(MR)damperwasdesignedandastudyonlow-frequencymechanicalcharacteristicsofMRdampersinisolatorswascarriedout.ItusedthecharacteristicsoftheMRdamper,suchasfastresponse,controllabledamping,smallenergyconsumption,widedynamicscope,andgreatadaptation.TherelationshipsbetweenMRdampingforcesandinfluencingfactorswereanalyzedbasedonexperimentaldata.Theresultsshowthatdampingforceisnotonlyrelatedtostructuraldimensions,butalsocloselyrelatedtocontrollablecurrentandvibrationfrequency.Finally,theempiricalformulafordampingforceswascorrected,andtherelationshipbetweencorrectioncoefficientsandfactorsanalyzed.

简介：

简介：Thereliabilityofsteelweldsbecomesmorecriticalissuewithincreasingsteelstrength,becausebrittlephasesaremorelikelytoformintheweldmetalsandheat-affectedzone(HAZ)andtherebythetoughnessandductilityoftheweldsaredegraded.Therefore,refinementofmicrostructureandminimizationofthebrittlephasesarenecessarytoimprovethereliabilityofthehigh-strengthsteelwelds.Inthispresentation,microstructureformationthatcontrolsthetoughnessofweldmetalsandHAZinhigh-strengthlow-alloy(HSLA)steelweldsisreviewedandpossibleroutestotheimprovementoftheweldmicrostructureandweldtoughnessarediscussed.

简介：NaturalweakacidicgroundwateroccursintheunconfinedandconfinedaquifersconsistingofQuaternaryandNeogeneunconsolidatedsedimentsnearBeihaiinsouthernGuangxi,China.UndernaturalconditionsthegroundwaterhaslowTDS(lessthan200mgL-1)andlowconcentrationsoftraceelements(lessthan100μgL-1)withadeceasingtendincontentsoftheLanthanides(rareearthelements,lessthan1μgL-1)towardshigheratomicnumber.ThegroundwaterrangesinpHfrom3.33to7.0withanaveragevalueof5.12(evenlowerthanthatoflocalrainwater,5.88).pHvaluesinthegroundwaterareabithigherinrainyseasonsthanthoseindryseasonsanddonotshowsignificantincreasingordecreasingtrendwithtime.TheaveragepHvalueingroundwaterintheconfinedaquifersisevenabitlowerthanthatintheunconfinedaquifer.ComprehensiveanalysesofthegroundwaterenvironmentsuggestthatH+inthegroundwatermaybederivedfromdissociationofH2CO3,releaseoftheabsorbedH3O+inclaylayersandtheacidityofrainwater.TheH2CO3inthegroundwatermaybeformedbydissolutionofCO2(g).Mineralsintheunconsolidatedsedimentarepredominatedbyquartzwithsmallamountofclayminerals.Thesedimentsundergoingalong-termweatheringcontainlowlevelsofsolubleconstitutes.Lackofalkalinesubstancesinthegroundwatersystemisalsohelpfulintheaccumulationofacidityofthegroundwater.

简介：Traditionaldigitalprocessingapproachesarebasedonsemiconductortransistors,whichsufferfromhighpowerconsumption,aggravatingwithtechnologynodescaling.Tosolvedefinitivelythisproblem,anumberofemergingnon-volatilenanodevicesareunderintenseinvestigations.Meanwhile,novelcomputingcircuitsareinventedtodigthefullpotentialofthenanodevices.Thecombinationofnon-volatilenanodeviceswithsuitablecomputingparadigmshavemanymeritscomparedwiththecomplementarymetal-oxide-semiconductortransistor(CMOS)technologybasedstructures,suchaszerostandbypower,ultra-highdensity,non-volatility,andacceptableaccessspeed.Inthispaper,weoverviewandcomparethecomputingparadigmsbasedontheemergingnanodevicestowardsultra-lowdissipation.