简介：Wepresentasemi-analyticalmethodofcalculatingtheelectrostaticinteractionofcolloidsolutionsforconfinedandunconfinedsystems.Weexpandtheelectrostaticpotentialofthesystemintermsofsomebasisfunctionssuchassphericalharmonicfunctionandcylinderfunction.Theexpansioncoefficientscanbeobtainedbysolvingtheequationsoftheboundaryconditions,combiningananalyticaltranslationtransformofthecoordinatesandanumericalmultipointcollectionmethod.Thepreciseelectrostaticpotentialandtheinteractionenergyarethenobtainedautomatically.Themethodisavailablenotonlyfortheuniformlychargedcolloidsbutalsofornonuniformlychargedones.Wehavesuccessfullyappliedittounconfineddilutedcolloidsystemandsomeconfinedsystemssuchasthelongcylinderwallconfinement,theair–waterinterfacialconfinementandporousmembraneconfinement.Theconsistencechecksofourcalculationswithsomeknownanalyticalcaseshavebeenmadeforallourapplications.Intheory,themethodisapplicabletoanydilutecolloidsolutionswithanarbitrarydistributionofthesurfacechargeonthecolloidalparticleunderaregularsolidconfinement,suchassphericalcavityconfinementandlamellarconfinement.

简介：Arepeatedinterdiffusionmethodisdescribedforphase-stableandhigh-quality(FA,MA)PbI_3film.Thecrystallizationandgrowthoftheperovskitefilmscanbewellcontrolledbyadjustingthereactantconcentrations.Withthismethod,dense,smoothperovskitefilmswithlargecrystalshavebeenobtained.Finally,aPCEof16.5%aswellasasteady-stateefficiencyof16.3%isachievedintheplanarperovskitesolarcell.

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简介：在有损耗的媒介解决电磁的反的散布问题的一个混合方法被建议。坡度搜索方法首先被用来决定目标的空间分发，然后，蒙特卡罗方法被选择计算scatterer的传导性和介电常数。数字实验的结果证实联合二个方法的混合方法是高精确的，有效，并且适合到全球优化。[从作者抽象]

简介：目的：对于复杂技术系统，给出不同研究领域的初步分类，并找出一些研究关注的问题。创新点：提出了一种推理方法，将复杂技术系统的研究领域分为三类。方法：1．对相关的学术刊物进行直觉探索；2．对领域和子领域研究给出基于证据的分类规范；3．对基于相关学术刊物的控制给出的分类进行提炼与验证。结论：复杂技术系统的研究领域分为三类，分别为：（1）智能化类，包括哲学、本体和认识论；（2）实现类，包括方法论和复杂技术系统的创建；（3）影响类，包括表现和价值学。

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简介：我们为基于波前错误和isoluminant颜色对比敏感功能(CSF)的大小决定孤立的颜色机制的神经对比敏感功能(NCSF)建议一个新方法。与传统的方法相比，这种技术避免协调噪音和点缀噪音，它被激光横梁的干扰带，并且为不同颜色机制的NCSF的大小有大灵活性。当蓝机制的那些是最低的时，我们的实验显示分别地，红机制的吝啬的NCSF和CSF比绿机制的那些高。然而，在红、绿的机制之间的NCSF和CSF的山峰的相对高度在题目变化。有一些个人，NCSF的价值或绿机制的CSF其山峰比红机制的高。孤立的颜色机制的NCSF和CSF都展出类似的特征和变化趋势。与统计一般水准，红、绿、蓝的机制的NCSF比在整个空间频率的相应CSF高。与相应CSF曲线相比，孤立的颜色机制的NCSF的山峰向更高空间的频率变，特别为有3.9c/deg的最大的移动的蓝机制的。[从作者抽象]

简介：Thispaperproposesalearning-basedmethodfortextdetectionandtextsegmentationinnaturalsceneimages.First,theinputimageisdecomposedintomultipleconnected-components(CCs)byNiblackclusteringalgorithm.ThenalltheCCsincludingtextCCsandnon-textCCsareverifiedontheirtextfeaturesbya2-stageclassificationmodule,wheremostnon-textCCsarediscardedbyanattentionalcascadeclassifierandremainingCCsarefurtherverifiedbyanSVM.AlltheacceptedCCsareoutputtoresultintextonlybinaryimage.Experimentswithmanyimagesindifferentscenesshowedsatisfactoryperformanceofourproposedmethod.

简介：TomoreindepthunderstandthedopingeffectsofoxygenonSiGealloys,boththemicro-structureandpropertiesofO-dopedSiGe(including:bulk,(001)surface,and(110)surface)arecalculatedbyDFT+Umethodinthepresentwork.Thecalculatedresultsareasfollows.(i)The(110)surfaceisthemainexposingsurfaceofSiGe,inwhichOimpuritypreferstooccupythesurfacevacancysites.(ii)ForOinterstitialdopingonSiGe(110)surface,theexistencesofenergystatescausedbyOdopinginthebandgapnotonlyenhancetheinfraredlightabsorption,butalsoimprovethebehaviorsofphoto-generatedcarriers.(iii)ThefindingaboutdecreasedsurfaceworkfunctionofO-dopedSiGe(110)surfacecanconfirmpreviousexperimentalobservations.(iv)Inallcases,Odoingmainlyinducestheelectronicstructuresnearthebandgaptovary,butisnotdirectlyinvolvedinthesevariations.Therefore,thesefindingsinthepresentworknotonlycanprovidefurtherexplanationandanalysisforthecorrespondingunderlyingmechanismforsomeoftheexperimentalfindingsreportedintheliterature,butalsoconducetothedevelopmentofμc-SiGe-basedsolarcellsinthefuture.

简介：使用Hamilton-Jacobi方法，兜售从一个动态Vaidya黑洞的明显的地平线的放射是计算的。黑洞热力学能在明显的地平线上成功地被造。如果相对论的不安被给明显的地平线，类似的计算能也导致一个完全热的系列，它从前者对应于修改温度。热力学的第一条法律能也在从明显的地平线有小偏差的新supersurface成功地被构造。当事件地平线从明显的地平线作为如此的偏差被认为时，典型位置和温度的表情与断言那热力学应该在事件地平线上被造的以前的结果一致。完全当事件地平线热力学只是明显的地平线附近的不安之一时，热力学应该在明显的地平线上被构造，这被结束完全当事件地平线热力学只是明显的地平线附近的明显的地平线附近的不安之一时。

简介：Fundamentalprinciplesfromstructuraldynamics,randomtheoryandperturbationmethodsareadoptedtodevelopanewresponsespectrumcombinationrulefortheseismicanalysisofnon-classicallydampedsystems,suchasstructure-dampersystems.Theapproach,whichisnamedtheperturbationspectrummethod,canprovideamoreaccurateevaluationofanon-classicallydampedsystem'smeanpeakresponseintermsofthegroundresponsespectrum.Toaccountfortheeffectofnon-classicaldamping,allelementsareincludedintheproposedmethodforseismicanalysisofstructure,whichisusuallyap-proximatedbyignoringtheoff-diagonalelementsofthemodaldampingmatrix.Moreover,ashasbeenadoptedinthetraditionalCompleteQuadraticCombination(CQC)method,thewhitenoisemodelisalsousedtosimplifytheexpressionsofperturbationcorrelationcoefficients.Finally,numericalworkisperformedtoexaminetheaccuracyoftheproposedmethodbycomparingtheapproximateresultswithexactonesandtodemonstratetheimportanceoftheneglectedoff-diagonalelementsofthemodaldampingmatrix.Intheexaminedcases,theproposedmethodshowsgoodagreementwithdirecttime-historyintegration.Also,theperturbationspectrummethodleadstoamoreefficientandeconomicalcalculationbyavoidingtheintegralandcomplexoperation.

简介：基于伴随的优化方法是在turbomachinery的一个热点。首先，这份报纸更多样地从Lagrange论述伴随方法的原则观点。第二，把一条连续线路与薄层RANS方程相结合，我们提出伴随方程和反物理的边界条件。由于在turbomachinery的多级式的环境，混合方法的伴随interrow被介绍。解决流动方程和伴随方程的数字技术是几乎一样，并且一旦他们分别地被集成，一个目的坡度工作设计变量能高效地用复杂方法被计算。第三，集成形状不安parameterization和一个简单最陡峭的降下方法，为多级式的turbomachinery的基于伴随的空气动力学的形状优化的一个框架被构造。最后，环形的串联的一个反的图案被采用验证一台Aachen1.5阶段汽轮机的上述途径，和伴随地表明伴随的保存和areflexiainterrow混合方法。然后1+1的直接重新设计相反旋转的汽轮机试图增加效率并且把限制用于集体流动率和压力比率被拿。

简介：ThenewmethodproposedrecentlybyFriedberg,LeeandZhaoisappliedtothederivationoftheatomicground-stateenergywiththeinclusionofthescreeningeffect.ThepresentresultsarecomparedwiththoseobtainedinthepureCoulombpotentialandbythevariationalapproach.Theoverallgoodresultsareobtainedwiththisnewmethod.``

简介：TheHomotopyanalysismethodisappliedtoobtaintheapproximatesolutionoftheKlein-Gordon-Schrdingerequation.TheHomotopyanalysissolutionsoftheKlein-Gordon-Schrdingerequationcontainanauxiliaryparameterwhichprovidesaconvenientwaytocontroltheconvergenceregionandrateoftheseriessolutions.Througherrorsanalysisandnumericalsimulation,wecanseetheapproximatesolutionisveryclosetotheexactsolution.

简介：Atopologymethodispresentedinthispapertorevealflowtructureoccurringinsieturbomachinery,inwhichnearwallflowstructureisrevealedbyusingwalllimitingstreamilinesandspaceflowfeatureisrevealedbyusingspacestreamilinesandcross-sectionstreamlines,Asanexample,acomputationalthree-dimensionalviscousflowfieldinsideatransonicturbinecascadeisstudied.Throughtheanalysis,theformandevolutionofvortexsystemandthewholeprocessofseparationoccurringwithinthiscascadearerevealed.Theapplicationoftopologymethodforanalyzeflowstructureinsideturbomachinmeryisveryimportantforunderstandingflowfeaturesandmechanismofflowlossevenforimprovingthedesignofturbomachineryandincreasingitsefficiency.

简介：Inthispaper,anextendedmethodisproposedforconstructingnewformsofexacttravellingwavesolutionstononlinearpartialdifferentialequationsbymakingamoregeneraltransformation.Forillustration,weapplythemethodtotheasymmetricNizhnik-Novikov-VesselovequationandthecoupledDrinfel'd-Sokolov-WilsonequationandsuccessfullycoverthepreviouslyknowntravellingwavesolutionsfoundbyChen'smethod[Y.Chen,etal.Chaos,SolitonsandFractals22(2004)675;Y.Chen,etal.Int.J.Mod.Phys.C4(2004)595].

简介：Thefreevibrationproblemofrectangularthinplatesisrewrittenasanewuppertriangularmatrixdifferentialsystem.Fortheassociatedoperatormatrix,wefindthatthetwodiagonalblockoperatorsareHamiltonian.Moreover,theexistenceandcompletenessofnormedsymplecticorthogonaleigenfunctionsystemsofthesetwoblockoperatorsaredemonstrated.Basedonthecompleteness,thegeneralsolutionofthefreevibrationofrectangularthinplatesisgivenbydoublesymplecticeigenfunctionexpansionmethod.

简介：Itisknownthatthestrengthofconcreteisseriouslyaffectedbydamageandcracking.Inthispaper,sixconcretesamplesunderdifferentdamagelevelsarestudied.Theexperimentalresultsshowalineardependenceoftheresonancefrequencyshiftonstrainamplitudeatthefundamentalfrequency,andapproximatequadraticdependenceoftheamplitudesofthesecondandthirdharmonicsonstrainamplitudeatthefundamentalfrequencyaswell.Inaddition,theamplitudeofthethirdharmonicsisshowntoincreasewiththeincreaseofdamagelevel,whichisevenhigherthanthatofthesecondharmonicsinsampleswithhigherdamagelevels.Thesearethreepropertiesofnon-classicalnonlinearacoustics.Thenonlinearparametersincreasefrom10~6to10~8withdamagelevel,andaremoresensitivetothedamageleveloftheconcretethanthelinearparametersobtainedbyusingtraditionalacousticsmethods.So,thismethodbasedonnon-classicalnonlinearacousticsmayprovideabettermeansofnon-destructivetesting(NDT)ofconcreteandotherporousmaterials.

简介：Amodifiedmovingparticlesemi-implicitmethod(MPS)ispresentedforincompressiblefluids.Modificationisontheremovalofimaginarynodestoenforcetheboundaryconditions.Comparisonwiththeoriginalimaginary-nodeschemehasprovedthevalidityoftheproposedmethod.PerformanceofMPSmethodingeneralisalsoinvestigatedbycomparingtheresultsofLid-drivenandnaturalconvectionproblemswithfinitevolumemethod(FVM).ItisfoundthatMPSmethodshowsrelativelystrongnumericaldiffusion,andforconvectionproblems,MPSmethodappearstobelessrobustthanFVM.Thoughbetterresultscouldbeobtainedwithdifferentkernelfunctions,suchimprovementisquitelimited.