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and Magnetic Properties in Fe_(25)Ni_(75) on Ball Milling TimeTX1IntroductionIthasbeenrecentlyreportedthatnanocrystalinemateri... 相似文献
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INTRODUCTIONTheproposedtwo stepcontrolgradingmethodshowninFig .1arrangesallkindsoffunctionsinorderofimportanceandthendefinestheirdegrees.Fig .1 Two stepcontrolgradingmethodprocedureFig.1showsthatthe“0 -1gradingmethod”firstgradesthefunctionsandthenuse“signex … 相似文献
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1 Introduction Thestressintensityfactor(SIF)ofthesemiellipticalsurfacecrackneedstobecalculatedforevaluatingthestrengthofmetalcomponentsbecausemanyflawsoccuronthecomponentsurfaceduetothenanufactureandtransportprocedure.Uptonow,solvingthreedimensionalcra… 相似文献
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MIAO Huai kou Bizuneh Bekele Teklay Tesfay 《上海大学学报(英文版)》1999,3(4):287-292
1 Introduction Specificationdescribesthebehaviorofthesystemintermsofresults,whereasanimplementationdefinesbehaviorintermsofprocedure.Thisdistinctiongivesrisetotheinformalnotionofdescribingspecificationas“what”asopposedtodescribingimplementationas“ho… 相似文献
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On L∞Stability and Convergence of Fictitious Domain Method for the Numerical Solutionto Parabolic Di
OnL∞StabilityandConvergenceofFictitiousDomainMethodfortheNumericalSolutiontoParabolicDiferentialEquationwithDerivativeBoundar... 相似文献
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INTRODUCTIONConstructioncostcontrolisimportantactivityforefficientmanagementofaconstructionproject.Acostcontrolsystemmustbedesignedtocontrolwelltheconstruction (WangShou qing,1 996) .Thissystemshouldbeprovidedwiththefunctiontolettheprojectmanagerknowthecur… 相似文献
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EFFECT OF CORROSION ON BOND BEHAVIOR AND BENDING STRENGTH OF REINFORCED CONCRETE BEAMS 总被引:1,自引:0,他引:1
INTRODUCTIONThereisgrowingconcernforcorrosiondam ageinreinforcedconcrete (RC)structureswithseveraldecades’service.Thereinforcementcor rosionofRCconstructionsprobablyisthemostsignificantproblemandoutweighsotherformsofdeterioration .StudiesbyPeattieetal.( 1 9… 相似文献
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《上海大学学报(英文版)》1999,3(2):2H
Physicalpropertiesofacrystalarerelatedtoitsconstituentchemicalbonds,whichshowtheinteractionofalconstituentatoms.Chemicalbond... 相似文献
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1 Introduction Generallyspeaking ,productconcurrentdesignislo calizedwithinenterprises .Withtheincessantdevel opmentofInternetandweb basedapplicationtech niques,however ,itisurgentlyneededtocopewiththeproblemsofproductconcurrentandcollaborativedesignindisc… 相似文献
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Notations Co—initialconcentrationofMnSO+4 ,mol/L Cx—concentrationofPhCHOattime ,mol/L Ct—concentrationofMnSO+4 attime ,mol/L Cy—concentrationofMnO2 ,mol/L ka—rateconstantofoxidation ,mol/(L·min) kb—rateconstantofdisproportionation ,mol/(L·min) ηθ—ratioofconversio… 相似文献
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FANG Zheng hua YIN Ren he Zakaria A. ZHANG Li Department of Chemistry College of Science Shanghai University Shanghai China 《上海大学学报(英文版)》2001,(2)
1 Introduction Itisknownthattheprotectionefficiencyofzincispartiallyasaresultofformingaprotectivefilmonabasemetal,suchassteel.Althoughpurezinccoatingprovidessomedegreeofprotectionforthesubstrate ,zincisconsumedrapidlyinaseverecorrosionenvi ronment.Conse… 相似文献
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1 Introduction Becauseofthecombinationofanumberoffavorableproperties,suchashighhardness,highcarriermobilityandbreakdownvoltage,largebandgap ,lowdielectricconstant,andtransparencytovisiblelight,IRlightandmicrowaves,etc.[1] ,diamondfilmhasbeenconsider ablyprom… 相似文献
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INTRODUCTIONInthispaper,weconsiderthefollowingcon vexquadraticprogrammingminf(x) =12 xTQx cTxs.t.Ax≤b ,x≥ 0( 1 )wherec ,xaren vectors,bisanm vector,AisamatrixandQisasymmetricpositivesemi definitem×nmatrix .Theformof( 1 )doesnotlosegenerality ,becauseanypequalitycon st… 相似文献
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g on a 150 M ̄3 Turbo Oxygen Gas ExpanderTX1IntroductionItisoneoftheimportantreasonsforusingactivemagneticbearingtoreplacetheae?.. 相似文献
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INTRODUCTIONItisimportanttoforecastandcalculatetheroleofconsolidationinstrengtheningsoftsoilground .Forconvenientuseinengineering ,themodelofconsolidationwasreducedtoaone di mensionalprobleminspatialdomain .SinceTerzaghiestablishedone dimensionallinearco… 相似文献
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黎锡强 《上海大学学报(英文版)》2000,4(2)
1 Introduction Thesputteringtechniquewellsuitsthegrowthofcompoundsandalloys ,whoseelementalconstituentshavesignificantlydifferentmelting pointsandvaporpressures.AconsiderableamountofworksaboutrfsputterdepositionofbinaryⅢ Ⅴcompoundfilmshasbeenpublished[1~… 相似文献
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INTRODUCTIONTheequilibriumbed concentration ,asthebedboundaryconditionforsolvingthedifferen tialequationofsuspendedloadisvitaltomath ematicalmodelingofsedimenttransport.Be causeofdifficultiesinmeasurementsofthebedconcentrationinthefieldandintheexperimen… 相似文献
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INTRODUCTIONOn lineseparationandpreconcentrationhavereceivedconsiderableattentioninflowinjectionanalysiscoupledwithatomicabsorptionspec trometryduringrecentyearsandiswidelyap pliedforselectivityandsensitivityenhancement(Fang ,1 995 ) .Automationofthesamplep… 相似文献
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HistoricalReviewOnThePsychologicalApproachesUnderlyingMotivationalRe search .Wewillconsiderthreegeneralapproachestomotivation :behaviourism ,cognitiveandsocialconstructivist .1.BehaviouristApproach :BehaviouristslikeSkinnerorWastonwouldstresstheroleofrewar… 相似文献