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1.
INTRODUCTIONLetZ ,N0 andNdenotethesetsofinte gers,non negativeintegersandpositiveintegers,respectively.Andletχ ={Xi} i∈Zdenotease quenceofreal valuedrandomvariablessuchthatEXi =0andEX2 i =σ2 X  i∈Z .Anyrealizationofthesequence {Xi} i∈Ziscalleda“randomscenery” .Lety ={…  相似文献   

2.
INTRODUCTIONEvaluationofthepatientwithsymptomsofsepsisrequiresacombinationofclinicalacumenandlaboratorysupport.Theclinicaldiagnosisofbacterialinfectionmaybedifficultincertainpatients,suchasneonates(Bakeretal.,1990).Whensepsisissuspected,manypatients,especi…  相似文献   

3.
设{Ei∶i∈I}是一族ArchimedeanRiesz代数,Riesz代数的乘积记为Πi∈IEi,则存在完全正则的Haus-dorf空间X使得Πi∈IEi是Riesz代数同构于C(X)的,当且仅当对每一个i∈I存在完全正则的Hausdorf空间Xi使得Ei是Riesz代数同构于C(Xi)的.  相似文献   

4.
INTRODUCTIONCis diamminedichloroplatinum (Ⅱ ) (Cis platin)isawidelyusedantineoplasticagentthathasnephrotoxicityasamajordose limitingsideeffect.Themostcommonformofcisplatin in ducedrenaltoxicityisnon oliguricacuterenalfailure.Theunderlyingmechanismofthisrena…  相似文献   

5.
Foralanguageteacher,howtoteachalanguagewell,especiallyaforeignlanguagewell,isabigproblemwemustfaceeveryday WeallknowthescientificallyvalidprocedureinlanguageleaninginvolvesListening ,speaking ,readingandthenwritingisthebasicorderinlanguagelearning Thisis…  相似文献   

6.
1 Introduction Coagulationisanirreversible physical processinwhichanumberofbasicunits(monomers)sticktogeth ertobuildclusters.ThetimeevolutionofclusteringprocesscanbedescribedbytheSmoluchovskiequa tion[1 ],whichisd  Ckd t =12 ∑i j=kK(i,j)CiCj-Ck∑jK(j,k)Cj,(1)whereCkd…  相似文献   

7.
1 Introduction Singularlyperturbeddifferentialequationswithturningpointsareveryimportantformathematiciansandphysicistssincetheseproblemsexistwidelyinmanyproblemsofphysics.TheproblemswithturningpointswerestudiedbyWentzal,Kramers,Bullounin[1],Langer,A…  相似文献   

8.
本文考虑了两类含Hystersis的自由边界问题。首先建立了Hysteresis算子及其导出算子然后作为预备,定理解决了相应地含Hystersis的固定边界问题古曲解存在唯一性。  相似文献   

9.
1 Introduction LetX ,YbetwoHilbertspacesandletA∈B(X ,Y) ,i .e .,aboundedlinearoperator .ConsidertheoperatorequationAx =y (1.1)IfR(A) ,i .e .,therangeofA ,isnon closedinY ,Eq .(1.1)isill posed[1] .Manyimportantproblemsinappliedsciences ,especiallyinverseproblems ,resultinthiski…  相似文献   

10.
PartⅠWordsworth ,aRomanticisttheoreti cianandpractitionerWordsworthisafamousBritishRomanticpoetwhobelongstotheLakeSchooloftheRomanticists,andoneoftheforerunnersof 1 9th centuryEnglishRomanticism .Heisnotonlyoneofthegreatesttheoreticiansinpoetry ,butalsoagr…  相似文献   

11.
1 Introduction LetX ,YbetwoHilbertspacesandletAbeaboundedlinearoperator,i.e .,A∈B(X ,Y) .Consid ertheoperatorequationAx=y . (1)IfR(A) ,therangeofA ,isnonclosedinY ,Eq .(1)isill posed[1] .Manyimportantproblemsinappliedsci encesresultinthiskindofequations[2 ,3] .Inthispaperwec…  相似文献   

12.
Motivatedbyredesigningafuselageinengineeringapplication,thenumericalandexperimentalinvestigationoftheseparatedflowfieldaroundaspecialbluntbodyisdescribedinthisthesis.Theaerodynamicresponseofthebluntbodyissuccessivelystudied.Thethesisconsistsoffour…  相似文献   

13.
1IntroductionTheclassicalthinplatetheoryofvibrationisbasedontheKirchhofhyothesis,andtheefectoftransversalsheardeformationandr...  相似文献   

14.
Amongthefourbasicskills ,writingistheweakpointofcollegestudentsinChina .Althoughinrecentyearsmuchmoreemphasisisputonthestudents’productiveskills ,duetothelimitedtime ,theyarenottakenveryseriouslyinpractice .IncurrentcollegeEng lishteachinginChina ,usuallyt…  相似文献   

15.
一九九四年下半年河北省高等教育自学考试阅读与写作试题Ⅰ.Findthebestchoice(15points)1.Iwanttohavetwo………………○A.scissorsB.setsofscissorsc.piecesofscissorsD.p...  相似文献   

16.
1 Introduction A generalizedinversematrixPad啨approximant(GMPA)isintroducedonthebasisofscalarproductofmatricesinRef.[1].TheexpressionofGMPAisoftheformofmatrixnumeratorandscalardenominator ,whichisdifferentfromthatofBoseandBasu[2 ] .Ascomparedtotheexistingmatr…  相似文献   

17.
Notation Allquantitieswererestrictedtoonemoleunlessotherwisespecified.GGibbsfreeenergyofPhase°GiGibbsfreeenergyofpurecomponentiofphaseximolefractionofcomponentiEGexcessfreeenergyofphasekjjthorderparameterofRedlichKisterpolynomialΔGf(i)fusionfree…  相似文献   

18.
分析了Windows环境中动态链接库的运行方式,讨论了动态链接库设计和实现中应当注意的细节,给出了利用Visual C++ 6.0开发32位动态链接库,并用Visual C++、Visual Basic应用程序引用动态链接库函数的实例。  相似文献   

19.
INTRODUCTIONInsectpostembryonicdevelopmentconsistsofgrowthpunctuatedbyaseriesofmoltsfollowedbymetamorphosis.Thesemoltsandmetamor phosisareinitiatedandcoordinatedbyhormones(Riddiford ,1 994 ) .Itisgenerallyacceptedthattheinterplayofecdysteriods,agroupofstero…  相似文献   

20.
浅议计算机辅助教学   总被引:1,自引:0,他引:1  
ComputerAssistedlnstruction (CAI)isthetermusedtodescribecomputerprogramsdesignedforteaching .ItisimportantnottoconfusethistermwithCALL(ComputerAssistedLanguageLearning)———thecatchalltermfordiffer entformsofL2instructionaccomplishedwiththeuseofcomputers.Fo…  相似文献   

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