简介：用非线性分析的方法讨论了方程N（t）=N（t）[a（t）-∑ni=1bi(t)Ni(t-τi（t）)]的周期正解的存在性，所获结果包含或推广了已有的几上结论[2，3]。

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简介：ThenewKEKCentralcomputersystememployedHPSSfordatamanagementTogainhighperformanceaccesstoHPSSeasily,webuiltawrapperoftheclientAPL.

简介：TheYang-Mills-HiggsfieldgeneralizestheYang-Millsfield.TheauthorsestablishthelocalexistenceanduniquenessoftheweaksolutiontotheheatflowfortheYang-Mills-HiggsfieldinavectorbundleoveracompactRiemannian4-manifold,andshowthattheweaksolutionisgauge-equivalenttoasmoothsolutionandthereareatmostfinitesingularitiesatthemaximumexistingtime.

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简介：Intheintroductionapreliminaryconsiderationofthesenseofconcepts“set”,“structure”,“system”,and“model”,aswellasoftheconnectionbetweenthemisproposedandonthebasisofitsresultsthetaskofinvestigationofabstractbasesofsystem(inparticularreconsiderationofconcept“abstractset”),ofabstractstructure,abstractsystemandofS-Modelisformulated.Thefirstsectionisdevotedtoformulationofanapproachtoconstructionofaggregatetheoryregardedasananalogofmoderateconstructivesettheory:therelations“inclusion”and“equivalence”betweenaggregatesandtheoperationsonaggregates“union”,“intersection,“difference”and“compliment”areintroduced.Definitionoftheconcept“a-system”aswellasofitsa-structureonthespaceofaggregatesisdefined.AspecialattentionisshowntosimilarityandessentialdifferencebetweenaggregatetheoryandsettheoryaswellastothefactthatthefamousparadoxesofCantorandRussellintheCantor’ssettheorytakenoplaceintheaggregatetheory.FurtheravariantofCantor’ssettheorycalledrestricteddiscretesettheoryisconsidered.Thesecondsectionisdevotedtoformulationofanapproachtoconstructionofalgebraofa-systems.Attheendtheconceptofsystemofsuccessivesystems(SSS),isintroduced.

简介：ThepurposeofthispaperistostudythestabilityandapproximationpropertiesofRitz-Volterraprojection.ThroughconstructinganewtypeofGreenfunctionsandmakinguseofvariouspropertiesandestimatesrelatedwiththefunctions,weprovethattheRitz-Volterraprojectiondefinedonthefinite-dimensionalsubspaceS_hofH_o~1possessestheW_p~1-stabilityandtheoptimalapproximationpropertiesinW_p~1andL_pfor2≤p≤∞.Ourresults,inthispaper,canbeappliedtothefiniteelementapproximationsformanyevolutionequationssuchasparabolicandhyperbolicintegrodifferentialequations,Sobolevequationsandvisco-elasticity,etc.

简介：充分一致的相对论的连续统随机阶段近似(RCRPA)以格林的功能技术被构造。在到原子刺激的连续统光谱的贡献完全被单个粒子对待的这个方法，格林是功能，它也在迪拉克海包括否定状态在没有海近似。RCRPA和数字细节的理论形式主义被介绍。单个粒子格林的功能被迪拉克方程的常规、不规则的答案的一个合适的产品数字地计算。数字细节和在动量表示的RCRPA的形式主义被介绍。

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简介：Theauthorsconsidertheexistenceandregularityoftheobliquederivativeproblem:{Pu=finΩ,^→tu=gonэΩwherePisasoc~adorderellipticdifferentialoperatoronR^n,ΩisaboundeddomaininR^nand^→tisaunitvectorfieldonthebouudaryofΩ(whichmaybetangentialtotheboundary).Allaboveareassumedwithlimitedsmoothnees.TheauthorsshowthatsolutionuhasanellipticgainfromfinHolderspaces(Theorem1.1).TheauthorsobtainL^nregualrityofsolutioninTbeorem1.3,whichgeneralizestheresultsin[7]tothelimitedsmoothcase.Someoftheapplicationnonlinearproblemsarealsodiscussed.

简介：Inthispaper,byconstructingtheone-to-onecorrespondencebetweenitsIFSandthequaternaryfractionalexpansion,then-thiterationanalyticalexpressionandthelimitrepresentationofthefamilyoftheKoch-typecurveswitharbitraryanglesareobtained.ThedistinctionbetweenourmethodandthatofH.SaganisthatweprovidethegenerationprocessanalyticallyandrepresentitasagraphofaseriesfunctionwhichlooksliketheWeierstrassfunction.Withthesearithmeticexpressions,wefurtheranalyzeandprovesomeofthefractalpropertiesoftheKoch-typecurvessuchastheself-similarity,theHo¨lderexponentandwiththepropertyofcontinuouseverywherebutdifferentiablenowhere.Then,wewillshowthattheKochtypecurvescanbeapproximatedbydifferentconstructedgenerators.BasedontheanalytictransformationoftheKoch-typecurves,wealsoconstructedmorecontinuousbutnowhere-differentiablecurvesrepresentedbyarithmeticexpressions.Thisresultimpliesthattheanalyticalexpressionofafractalhastheoreticalandpracticalsignificance.

简介：2-Amino-l,l-diferrocenylethanol2waspreparedbyreductionoftrimethylsilylcyanohydrinetherofdiferrocenylketone.Thecrystalstructureof2wasfurtherdefinedbyX-raydiffraction.

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简介：ＴＨＥＰＡＴＨＷＩＳＥＳＯＬＵＴＩＯＮＦＯＲＡＣＬＡＳＳＯＦＱＵＡＳＩＬＩＮＥＡＲＳＴＯＣＨＡＳＴＩＣＤＩＦＦＥＲＥＮＴＩＡＬＥＱＵＡＴＩＯＮＩＮＢＡＮＡＣＨＳＰＡＣＥＳＩＨｕＹａｏｚｈｏｎｇ（胡耀忠）（ＷｕｈａｎＩｎｓｔ．ｏｆＭａｔｈ．Ｓｃｉ．，Ｃ...

简介：OnCopositiveInthispapertheauthorwritesasimplecharacterizationforthebestcopositiveapproximationtoelementsofC（Q）byelementsoffinitedimensionalstrictChebyshevsubspacesofC（Q）inthecasewhenQisanycompactsubsetofrealnumbers.AttheendofthepapertheauthorappliesthisresultfordifferentclassesofQ.

简介：R．A．Gordon在[1]中定义了从R^1到Banach空间抽象函数的McShane积分，证明了当X不含C0时，如果，在[a，b]上MeShanef可积，则在[a．b]上Pettis可积．在这篇文章中，我们定义了从R^n到Banaach空间抽象函数的Mcshane积分。证明了fMcShane可积，则f是Pettis可积．于是我们推广了[1]的结果。

简介：Inthispaper,westudyseveraliterativemethodsforfindingthemaximal-likesolutionofthematrixequationX+A~*X~(-2)A=I,anddeducesomepropertiesofthemaximal-likesolutionwiththesemethods.

简介：TheLaboratoryforIntenseLasers（L2I）isaresearchcentreinopticsandlasersdedicatedtoexperimentalresearchinhighintensitylaserscienceandtechnologyandlaserplasmainteraction.Currentlythelaboratoryisundergoinganupgradewiththegoalofincreasingtheversatilityofthelasersystemsavailabletotheusers,aswellasincreasingthepulserepetitionrate.Inthispaperwereviewthecurrentstatusofthelaserresearchanddevelopmentprogrammeofthisfacility,namelytheupgradedcapabilityandtherecentprogresstowardstheinstallationofanultrashort,diode-pumpedOPCPAlasersystem.

简介：该型测量组合导航系统是在装船使用４年取得较好效果的情况下，于１９９３年２月通过部级技术鉴定，本文概要介绍了主要功能、技术途径、硬件设计特点、软件设计概况及数据处理技术，并综述了海上试验与试用情况等技术资料。

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