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简介：采用回归SVM框架，这份报纸建议语言学激发的特征工程策略与与人的评价的更好的关联开发一个MT评估度量标准。与所有可得到的特征的贪婪联合的当前的惯例相对照，六个特征为翻译质量根据人的直觉被建议。然后，语言学特征的贡献经由爬山的策略被检验并且分析。实验显示与彻底的语言学特征上的评价SVM模型或以前的尝试相比，有六个语言学信息的回归SVM模型基于特征更好概括到对面不同的数据集，并且与合适的非语言学的度量标准扩充这些语言学特征能完成另外的改进。

简介：在米饭谷物的萌芽期间决定生物化学的变化(OryzasativaL。subsp。indicavar。Mottaikaruppan)并且用gibberellic酸和表面活化剂改进萌芽率[钠dodecyl硫酸盐(SDS)(1.0g/L)和Triton-X?100(1.0mL/L)]，在30°C为12h在提取的水里浸泡的整个米饭谷物在30°C在黑暗中被发芽五天。最高的萌芽率(77.1%)在第5天被获得。从7.3～58.1mg/gDM(干燥的事)减少糖的内容的增加从萌芽的第一天被观察。免费氨基酸和可溶的蛋白质内容增加了到3.69和5.29mg/gDM，分别地在萌芽的第5天。全部的蛋白质内容在萌芽期间从100.5～91.0g/kgDM减少了。的增加淀粉分解(1.1～190.0U/gDM)并且解朊(0～0.12U/gDM)活动在萌芽期间被观察。米饭谷物的萌芽上的gibberellic酸的不同集中的效果被评估，0.1g/L被发现支持萌芽。当gibberellic酸(0.1g/L)和表面活化剂的效果个别地并且一起被评估时，更高的萌芽率在控制实验被观察(谷物在提取的水里发芽了)，而giberellic酸和表面活化剂减少了萌芽率。因此，从谷物获得的面粉用提取的水发芽了四天获得可溶的材料的高内容，酶活动能在面包房项目的准备被使用。

简介：ThroughanalysisandnumericalcomputationofECMWF’sdiscreteschemeofhydrostaticequation(Baedeetal.1979),ithasbeenfoundthatinthecaseofequal△σthereexistsystematicerrorsinthescheme.TheerrorE(?)causedbytakingthearithmeticmeanofthegeopotentialheightsoftwoadjacenthalfa-levelsasthegeopotentialheightofthecor-respondingintegera-level,increaseswithheightandhasanunacceptablemaximuminthevicinityofthetopoftheat-mosphere;however,theerrorscausedbythetemperaturetreatmentaregenerallysmall.Ontheotherhand,ifanuneven△σ-schemeinwhichthelevelsintheupperandloweratmospherearedenserthanthoseinthemiddleatmosphere,isadopted,thenE(?)canbemuchreduced.However,iftheresolutionoftheoriginalequalArt-schemedoubles,thenE(?)canonlybefoundtobemuchreducedinthetroposphereandthatinthevicinityoftheatmospherictopisstillunacceptable.Twonumericalschemesforimprovementhavebeenpresented.OfthemoneisthesameastheECMWF’sscheme,butwithequal△lnσ,andtheotheristointegratetheequationbytheuseofTschebyscheffpolynomialsTandtoadoptthezerosofTNastheatmosphericlevelswhereNisthetotalnumberoflevels.Theresultsshowthatwithbothschemesthecomputationalerrorscanbemuchreduced,especiallythelatter,duetothefactthattheerrorsofthreestatisticaltypesaregenerallylessthantherootmeansquareerrorofthegeopotentialheightsreportedinTEMP.

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简介：Therearethreemainproblemsintheweaklynonlineartheoryofhydrodynamicstability:(1)Thera-diusofconvergencewithrespecttotheperturbationparameteristoosmallandthereisnoconcreteestimationforit.(2)Thesolutionhasaspecialstructure,thusingeneral,itcannotsatisfytheinitialconditionposedbymanypracticalproblems.(3)Whenthelinearpartofitssolutiondoesnotcorrespondtoaneutralcase.therearemorethanonewayindeterminingtheLandauconstants,andpracticallynooneknowswhichisthebestway.Inthispaper,problems(1)and(2)aresolvedtheoretically,andwaysforitsimprovementhavebeenproposed.Bycomparingthetheoreticalresultswiththoseobtainedbynumericalsimulations,problem(3)hasalsobeenclari-fied.

简介：在多媒体通信中，低码率信道上的视频传输正成为一个日益重要的研究领域．因此，必须在保证主观可接受视频质量的前提下，尽可能提高编码效率．本文提出了一种把ＪＮＤ概念引入Ｈ．２６３编码器的方法．首先，我们回顾了时－空域的ＪＮＤ概念；然后把ＪＮＤ概念从象素级推广到宏块级，使之适用于Ｈ．２６３编码器．实验结果表明：与ｔｍｍ５编码器相比，在相同的主观质量下，本文提出的方法可以大大降低码率，并且与Ｈ．２６３标准完全兼容．

简介：Thetechniqueoncomputingthehorizontalpressuregradientforce(PGF)inRegCM2isimprovedwiththeerrorsubtractionmethod.Moreover,theregionalclimateinJuneof1991inChinaissimulatedbyemployingtheRegCM2.ComparisonwithotherschemesforcomputingthePGFshowsthattheerrorsubtractionmethodcaneffectivelyreducetheerrorofthePGF,improvethesimulationofwindsandalleviatethespuriousprecipitationinsteeptopographicareas.Furthermore,thesimulationofprecipitationinotherareasisinbetteraccordancewiththeobservation.

简介：Wereportourlatticesimulationonthecharmoniumspectrainthequenchedapproximation.Becausethecompleteadjustmentonallthenonperturbativeparametersneedsmuchcalculationtime,weonlyadjusttwoofthem,butwithsomerescalingformasssplitting.Aftertherescaling,thecalculatedmassesofmesonare3.030GeV(ηc),3.080GeV(J/ψ),3.546GeV(he)and3.412GeV(Xco)respectively,whichisinagreementwiththeexperimentalresults.

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简介：ＳｔａｔｕｓＡｎａｌｙｓｉｓａｎｄＩｍｐｒｏｖｅｍｅｎｔＰｒｏｐｏｓａｌｏｆＣｏｎｔｒｏｌＳｙｓｔｅｍｆｏｒＳｉｎｕｓｏｉｄａｌＰｏｗｅｒＳｕｐｐｌｉｅｓ￥ＣｈｅｎＭｉｎｇｌａｎｇＴｈｅｓｉｎｕｓｏｉｄａｌｐｏｗｅｒｓｕｐｐｌｉｅｓｉｎＳＦＣａｒｅｖ...

简介：Crudeoilisthemostimportantbasicenergyintheworldnowadaysandiscloselyconnectedwiththedevelopmentofnationaleconomy,consolidationofnationaldefenseandthelivingstandardofthepeople.Changesincrudepricecanhaveadecisiveimpactonanation'spoliticalandeconomicsituation.Hencethegovernmentofeverycountrysticksgreatimportancetocontrolovercrudeoilresourcesandadjustmentofcrudepricetoassurethestabilizationofitsdomesticcrudeoilmarket.

简介：Carbon-basematerialsisoneofcandidateplasmafacingmaterialsandhavebeenwidelyusedincurrenttokamakfacilitiesintheworld.Butsomedefectpropertiesarepresentedonhighyieldofchemicalsputtering,highyieldofradiationenhancementsublimate(RES),crackingafterheatfluxindivertorandsoon.Thesecharacterisarerelatedtotheinterstitialcarbonatomproducingandmobile,soitcanbeimprovedbydopedsomelittleotherelementsintothecarbon-basematerials,suchasboron,silicon,titaniumandsoon.

简介：Highfunctionalitygiventosteelproductsresultsinanincreaseofenvironmentalloadsinthesteelmakingstage.However,atthestageoftheirutilization,thehigh-functionalsteelproductsprovetobemoreenvironmentallyfriendlythantheirconventionalcounterpartsinmanycases.Inviewofthiscontradiction,theevaluationonthecontributionofsteelproductstoenvironmentalimprovementrequiresamoreintegratedapproach-LifeCycleAssessment(LCA),whichincorporatestheeffectsovertheproducts'entirelifecycles.Thispaperdiscussestherelationshipbetweentheimprovementofsteelproducts'performanceandtheaccordingenvironmentalimpactfromtheentirelifecycleperspectives.Howtoevaluateandassessthecontributionofhigh-functionalsteelproductstoenvironmentalimprovementusingLCAmethodisexplainedindetail.TwocasestudiesofBaosteelaregiventosubstantiatetheeffectivenessofLCAasascientificandsystematicmethodforeco-materialevaluationoreco-design:①Forapowertransformer,byreplacingsiliconsteelB30G130withB30P110,thecarbondioxideemissionswerereducedby15.1%overthelifecycleofthetransformer.②TinplatesteelofBaosteelusedfortwo-piecesteelcansexperiencedsixreductionsinthicknessfrom0.28mmto0.225mm,whichresultsina14.5%emissionreductionoverthelifecycleoftwo-piecesteelcans.

简介：Theshrinkagecharacteristicsofexpansiveconcretefilledsteeltube(CFST)areanalyzed,Coldshrinkage,creepandautogenousshrinkageareconsideredasthemainreasonsofcausingCFSTcontraction.InaccordancewiththeshrinkagecharacteristicsofexpansiveCFST,akindofenergy-storeddelayedexpansiveagentisexploited,whichcannotonlycompensatetheshrinkageofthecoreconcreteineverystages,butalsomakeCFSTexpandaccordingtothedelayedexpansionmechanism.Astheresult,theprestresslosswillbereducedandexpansiveenergywillbeutilizedeffectively.

简介：CausesforcentralshrinkpipeofGCr15bloomswereanalyzed.Countermeasurestotacklewithsuchdefectwerepracticed,includingsuitablesecondarycooling,softreductionandcastingspeed,aswellasstrictsuperheatcontrol.Theresultsshowthatthequalityofbloomcastingsissignificantlyimproved.

简介：Anirradiationgraftingmethodwasappliedforthemodificationofnanoparticlessothatthelattercanbeaddedtopolymericmaterialsforimprovingtheirmechanicalperformanceusingexistingcompoundingtechniques.Thefollowingitemsarediscussedinthispaper:(a)chemicalinteractionbetweenthegraftingmonomersandthenanoparticlesduringirradiation,(b)propertiesincludingmodulus,yieldstrength,impactstrengthandfracturetoughnessoftheresultantcomposites,and(c)possiblemorphologicalchangesinducedbytheadditionofnanoparticles.Throughirradiationgraftingpolymerization,nanoparticleagglomeratesturnintoanano-compositemicrostructure(comprisedofthenanoparticlesandthegrafted,homopolymerizedsecondarypolymer),whichinturnbuildsupastronginterfacialinteractionwiththesurrounding,primarypolymericmatrixduringthesubsequentmixingprocedure.Duetothefactthatdifferentgraftingpolymersbroughtaboutdifferentnanoparticle/matrixinterfacialfeatures,microstructuresandpropertiesoftheultimatecompositescouldthusbetailored.Itwasfoundthatthereinforcingandtougheningeffectsofthenanoparticlesonthepolymermatrixcanbefullybroughtintoplayataratherlowfillerloadingincomparisontoconventionalparticulatefilledcomposites.

简介：Amethodofenhancingpowersystemstabilityforasinglemachinetoinfinitebuspowersystemispresented.ThetechniqueusedcompromisestheeffectivenessofProportional-Integral-Derivativecontroller(PID).Inordertosatisfythedampingcharacteristicsfortheproposedpowersystemoverawiderangeofoperatinginterval,rotationalspeed,torqueangleandterminalvoltagesignalsofthesynchronousmachineareutilizedascontrolsignalsofthesystem.Itiswellknownthatthesevariableshavesignificanteffectsondampingthegeneratorsshaftmechanicaloscillations,it'llbesoeasytovalidatethemostsuitablecontrollerasseenfromthesimulationresults.

简介：互补feeders的表演，在平行跑，能被在批评地点安装静态的转移开关(STS)显著地改进。当电压sag或一个差错在比较喜欢的feeder上发生时，我们开发STS控制逻辑，它从比较喜欢的feeder把临界负载转移到交替的feeder。一种强迫的交换技术被建议并且实现了关掉比较喜欢的支线船舶的闸流体，因此避免生气电流流动并且最小化转移时间。模拟结果证明强迫的交换技术是为圣操作同样与最近建议的时间延期技术相比有效的更多。二不同feeders，也就是新的交换，比较喜欢的支线船舶，和部门I-10/2，伊斯兰堡电的供应同伴(IESCO)的交替的支线船舶，巴基斯坦，为案例研究被选择了。软件PSCAD/EMTDC职业包裹被用于模拟。