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  • 简介:Theshrinkageofthecementpastewithlowwater-cementratioatdifferentrelativehumiditywasobservedandanalyzedwithESEManddeformationmaptechnique.ThecrackmorphologywasobservedwithdifferentmagnificationwithSEMandFESEM,andtheformationofthecrackwasobservedwithAFMbetweentwoC-S-Hnanoparticles.Theobservationbymultitechniqueatmultiscaleindicatedthattheshrinkagewasincreasewiththedecreaseofthehumidityduetotheincreaseofthepressureofthecapillarypressure,themorphologyofthecrackinsmallerscalewassimilartothatinthebiggerscale,thesmallercrackdistributedinthelatticeworkofthebiggerones,andthecrackpropagatedalongthegapbetweentwonanoparticlesofC-S-Hwithweakerbonding.

  • 标签: 硬化水泥浆体 裂纹分布 技术 扫描电镜分析 相对湿度 毛管压力
  • 简介:在可变multi-loadings下面的结构的临时的便床分析被考虑,并且相应简单临时的便床条件在这份报纸被介绍。固定压力地的分发被给,并且固定压力地的自我平衡被分析。有弹性的临时的便床和塑料临时的便床条件基于固定压力地被介绍。定理是方便的多在轮转的变量下面评估结构的临时的便床限制--通过在结构的一系列危险位置解决积极的分级的域和固定压力域因素的装载,和乏味的计算被避免。最后,定理在变量下面被用于一个厚墙的圆柱的试管压力和温度,和滚动接触问题。结果在对一些计算结果的好同意。

  • 标签: 振动极限 残差应力 变量 力学
  • 简介:这份报纸学习多相的thermoelasticcomposites的有效性质。把免费精力和吉布斯基于Helmholtz多相的composites的单个阶段,有效有弹性的张肌,热扩大的张肌,和特定的热的免费精力借助于体积一般水准被导出这些阶段免费精力。特别强调以经常紧张、经常压力的状况,修改Eshelby的micromechanics理论在被开发被放在有效的特定的热的新分析表情的推导上,在包括之间的相互作用被考虑。作为一个解说性的例子,为三阶段的thermoelastic的有效的特定的热的分析表示合成被介绍。

  • 标签: 弹性复合材料 有效热 亥姆霍兹自由能 解析表达式 吉布斯自由能 多相复合材料
  • 简介:Thispaperdescribesamulti-threatreal-timeseparatingsystemforbroadbandanti-radiationmissileseeker.Itpresentsamethod,withadual-portmemoryascomparer,toperformPFandPWhardwarereal-timeseparationandtodeterminethetime-of-arrival(TOA)byuseofsequentialdifferencehistogram(SDIF).Themethodhasbeenappliedtopractice,whichhasachievedgoodresults.

  • 标签: Signal separating TOA to PRI DUAL-PORT
  • 简介:Inthecourseofimprovingand/ordesigninganenergysystem,eitherpurelyeconomiccriteria,althoughtheoverridingcriteria,orpurelyenergy-basedcriteria,althoughtheemphasizedcriteria,cannotseparatelyhandlereal-worldsituationsinasatisfactorymanner,Theeconmiceffectivenessandtheenergyefficiencymustbeconsideredsimultaneouslytodemonstratetheconfilictingandnon-commensurablecharacteristicsofthesemultiplecriteria.Aniterativeandinteractiveapproachtoformulatingandsolvingnon-linearmulti-criteriadecisionmakingproblemsfortheanalysisofanenergysystemisproposed.Itallowsthedecisionmaker(DM)tolearnfromtheavailableinformationanddymamicallychangehismind.Criterionfunctioinscanbetreatedasobjectivefunctions,asconstraintsofassomethinginbetweenbytheDM.Afteraseriesofiterationsandinteractiveprocedures,apreferredsolutioncanbemadeamongthenon-inferiorsetsconsideringthermodymamiccriteriaandeconomiccreteriasimultaneously,asimpleexamplefordesignofahestexchangerisusedtoillustratetheprocedure.

  • 标签: 工业系统 设计 多方鉴定 经济效益
  • 简介:这篇论文分析多头mounter的集会时间的优化算法。在这篇论文的算法由四步组成。首先,喂ers基于分配部件“一对多的印射”。第二,它由充分利用“现场的嘴变化”把嘴分到头头。第三,它组织feeder组以便头能拣;把部件组放由组。最后,它把feeder组分到槽。结果证明算法在实践有好性能。

  • 标签: 装配 给料分配 优化算法 印制电路
  • 简介:Multi-scalestructuresinvolvedinemulsionandmicrospherecomplexsystemsarepresentedanddiscussed.Thestabilityandspatio-temporalstructuresofemulsions,aswellasnano-structuresformedonthesurfaceofmicrospheresafterpolymerization,areaffectedbythemolecularemulsifier/stabilizerstructuresandtheadsorbedemulsifier/stabilizernano-structuresontheoil/waterinterface.Thebroadsizedistributionandvariationofsurfacefeaturesofdropletsareresponsibleforvariationsoftheadsorbedemulsifier/stabilizerstructuresandthestabilityoftheemulsions.Ontheotherhand,preparationofauniformlysizedemulsionandemploymentofacombinedemulsifier/stabilizersystemcanpreservethestabilityoftheemulsionsandmicrospheres.Theabovephenomenashouldbemodeledbyamultiscalemethod,inordertomaintainthestabilityofindividualemulsionsystemsandrealizethedesirednano-structuresofmicrospheresbychoosingadequateemulsifier/stabilizerandexperimentalparameters.

  • 标签: 乳状液 时空结构 微球体 纳米结构
  • 简介:在这篇论文,multi-scaled形态学为土地被介绍进数字处理领域地震数据。首先,我们描述探索震波的multi-scaled形态学图象分解的基本理论;第二,我们说明怎么为用二个真实例子处理的地震数据使用multi-scaled形态学。第一个例子示威压制表面波浪在预先叠地震记录使用multi-scaled形态学分解和宪法和另外的例子示威在地震记录上过滤不同干扰波浪。过滤的Multi-scaled形态学由波浪形状的详细差别把信号与噪音分开。成功的应用建议multi-scaled形态学在地震数据处理有有希望的应用。

  • 标签: 地震数据过程 地震数据降噪 结构元素 多鳞状形态学
  • 简介:InthispaperanapproximateequationisderivedtodescribesmoothpartsofthestabilityboundaryforlinearHamiltoniansystems,dependingonarbitrarynumberofparameters.Withthisequation,wecanobtainparameterscorrespondingtothestabilityboundary,aswellastothestabilityandinstabilitydomains,pro-videdthatonepointonthestabilityboundaryisknown.Thendifferentialequationsdescribingtheevolutionofeigenvaluesandeigenvectorsalongacurveonthesta-bilityboundarysurfacearederived.Theseequationsalsoallowustoobtaincurvesbelongingtothestabilityboundary.Applicationstolineargyroscopicsystemsareconsideredandstudiedwithexamples.

  • 标签: stability BOUNDARY HAMILTONIAN systems EIGENVALUES PERTURBATION
  • 简介:TheStokesspectruminthestimulatedRamanscattering(SRS)isverycomplicated.Inthisarticle,weusebothGaussianandLorentzapproximationtoinvestigatethegainpropertiesofmulti-pumpingbroadbandRamanamplifier,andpresentsomeschemesforflatteningthegain.Alltheresultsshowthattheflatnessofthegainspectrumiscloselyrelatedtothepumpingfrequencygrid.ByresearchingthegainpropertiesofRamanamplifiersofsuchITU-TfibersasG.652,G.653,G.655andlargeeffectiveareanon-zerodispersionflatteningfiber,wefindthattheRamangainisassociatedwiththefibertypeanditstransmissioncharacteristics,especiallyitdecreaseswiththeincreaseoftheeffectivecorearea.

  • 标签: 光纤通信 多波长抽运 RAMAN放大器 SRS
  • 简介:THEEFFECTOFTHEINTERACTIONAMONGMULTI-SCALESYSTEMSANDTHEASYMMETRICDYNAMICANDTHERMODYNAMICSTRUCTUREOFTROPICALCYCLONEONITSTRACKXu...

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  • 简介:Thispaperstudiesconsensusofaclassofheterogeneousmulti-agentsystemscomposedoffirst-orderandsecond-orderagentswithintermittentcommunication.Forleaderlessmulti-agentsystems,weproposeadistributedconsensusalgorithmbasedontheintermittentinformationofneighboringagents.Somesufficientconditionsareobtainedtoguaranteetheconsensusofheterogeneousmulti-agentsystemsintermsofbilinearmatrixinequalities(BMIs).Meanwhile,therelationshipbetweencommunicationdurationandeachcontrolperiodissoughtout.Moreover,thedesignedalgorithmisextendedtoleader-followingmulti-agentsystemswithoutvelocitymeasurements.Finally,theeffectivenessofthemainresultsisillustratedbynumericalsimulations.

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  • 简介:这份报纸面对外部骚乱为多代理人系统学习动态优化问题。与存在不同分布式的优化结果,我们提出连续时间的多代理人系统的一个优化问题,变化时间的骚乱由exosystem产生了。基于内部模型和基于Lyapunov的方法,一个分布式的图案被建议完成优化。最后,一个例子被给说明建议优化设计。

  • 标签: 多智能体系统 外部干扰 动态优化 LYAPUNOV 分布式设计 优化问题
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  • 简介:Directcalculationsofabsorptionspectraformulti-quantumwellstructuresbyextractingfielddistributionsatwellpositionsareperformed.ResultsdemonstratethepreviouslyreportedBraggsuppression,andagreeexactlywiththeindirectcalculationbylineardispersiontheory.ThisrevealsthatBraggsuppressioneffectinfactoriginatesfromtheremarkablydecreasedintensitiesatwellpositionsbyBragginterferencecondition,ratherthanfromtheformationofsupperradiantmodes.

  • 标签: 光学 吸收光谱 多量子阱结构 势阱 布拉格抑制 MQW
  • 简介:Basedonthegapacceptancetheory,themixedtrafficflowcomposedofrrepresentativetypesflowsontheunsignalizedintersectionissetup.Itisanextensionofcapacitymodelforonetypevehicletrafficflow,anditisveryfittertotheChinesehighwaytrafficconditionthantheothermodels.

  • 标签: HEADWAY MIXED TRAFFIC FLOW capacity
  • 简介:为在期望的多搬运人信号隐藏的干扰,这份报纸建议新奇察觉和识别算法。算法不能仅仅由高顺序的cumulant检测单个搬运人的干扰(SCI),而且基于光谱特性发现多搬运人信号。而且,算法能区分SCI的调整类型。算法不取决于任何优先的知识并且帮助数据,它对实际应用慈悲。分析和模拟结果证明建议算法是有效的。

  • 标签: 多载波信号 识别算法 干扰检测 高阶累积量 载波干扰 频谱特性