简介：数学实验是指为获得某种数学理论，检验某个数学猜想，解决某些数学问题，实验者运用一定的物质手段，在数学思维活动的参与下，在典型的实验环境中或特定的实验条件下所进行的一种数学实践探索活动．

简介：1提出问题已知：四边形ABCD中,J、K、L、M分别是AB、BC、CD、DA的中点，依次将，J、K、L、M四点连接，猜想四边形JKLM是什么四边形？

简介：图形计算器（GraphingCalculator，以下简称GC），问世于上世纪80年代．是一种专门用于数学学习与教学（中学与大学）的手持技术．其外形与大小类似科学计算器，但功能更为强大．它兼具绘图（绘制函数图像，甚至进行几何作图）、数表处理与统计计算等功能．有的还能做代数符号演算，解决多项式、线性代数与微积分（甚至偏微分方程）中的计算问题．

简介：

简介：引进分次Armendariz环的概念,讨论了分次环R=n∈ZRn及由它导出的非分次环R,R0,及R[x]之间关于Armendariz环性质的关系,并推广了[8]的结论,得到在R=n∈ZRn是Z-型正分次环的前提下,若R是分次Armendariz,分次正规环,则R是P.P.环(Baer环)当且仅当R是分次P.P.环(分次Baer环).

简介：在Г-环中定义P-根，次P-根与拟P-根的概念，讨论它们的性质及相互间的关系．给出了次P-根的构造，证明了对Г-环的任一代数性质P，总可确定两个Amitsur-Kurosh根．同时，对Г-环的几个具体根的研究做了统一．拓广了Г-环根理论的研究领域．

简介：Multimediastreamingservedthroughpeer-to-peer(P2P)networksisboomingnowadays.However,theend-to-endstreamingqualityisgenerallyunstableduetothevariabilityofthestateofserve-peers.Ontheotherhand,proxycachingisabandwidth-efficientschemeforstreamingovertheInternet,whereasitisasubstantiallyexpensivemethodneedingdedicatedpowerfulproxyservers.Inthispaper,wepresentaP2PcooperativestreamingarchitecturecombinedwiththeadvantagesofbothP2Pnetworksandmultimediaproxycachingtechniquestoimprovethestreamingqualityofparticipatingclients.Inthisframe-work,aclientwillsimultaneouslyretrievecontentsfromtheserverandotherpeersthathaveviewedandcachedthesametitlebefore.Inthemeantime,theclientwillalsoselectivelycachetheaggregatedvideocontentsoastoservestillfutureclients.Theassociateprotocoltofacilitatethemulti-pathstreamingandadistributedutility-basedpartialcachingschemearedetailedlydis-cussed.Wedemonstratetheeffectivenessofthisproposedarchitecturethroughextensivesimulationexperimentsonlarge,Inter-net-liketopologies.

简介：SomecharacterizationsoftheconditionalexpectationoperatorsonLebesgue-BochnerspacesL_p(μ,X)aregiven,where1≤p<∞,p≠2.AlsoanexampleisgiventoshowthatthecharacterizationsoftheconditionalexpectationoperatorsonL_p(μ,X)aredifferentfromthatonL_p(μ)_zFinally,arepresentationoftheconstant-preservingcontractiveprojectiononspacesL_p(μ,X)isgotwhen0<p<1.

简介：ＯＮＴＨＥＣＬＡＳＳφ_ｐ~＊（α，β，γ，ε，η；Ａ）ｏｆｐ－ＶＡＬＥＮＴＦＵＮＣＴＩＯＮＳＷＩＴＨＲＥＦＥＲＥＮＣＥＴＯＴＨＥＢＥＲＮＡＲＤＩＩＮＴＥＧＲＡＬＯＰＥＲＡＴＯＲＪｉａｎＭｉｎｇ（蹇明）（ＷｕｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｗｕｈａｎ４３０...

简介：<正>LetD={z∈:|z|<1}andφbeanormalfunctionon[0,1).Forp∈(0,1)suchafunctionφisusedtodefineaBergmanspaceA~p(φ)onDwithweightφ~p(|·|)/(1-|·|~2).Inthispaper,thedualspaceofA~p(φ)isgiven,fourcharacteristicsofCarlesonmeasureonA~p(φ)areobtained.Moreover,asanapplication,threesequenceinterpolationtheoremsinA~p(φ)arederived.

简介：

简介：Letp(z)=beapolynomialdegreenandletThenaccord-ingtoBernstein’sinequality||p’||p||.ItisawellknownopenproblemtoobtaininequalityanalogoustoBernstein’sinequalityfortheclassIInofpolynomialssatisfyingp(z)≡znp(1/z)HereweobtainaninequalityanalogoustoBernstein’sinequalityforasubclassofIInOurresultsincludeseveraloftheknownresultsasspecialcases.

简介：当branes的二栈是到对方的没放的平行时，我们概括在branes的二平行的栈之间的远程的相互作用的计算到各种各样的案例。我们分类相互作用的性质(排斥或吸引人)为每个专辑，大小写和这个分类能被用来认为在象brane界限状态那样的二个复杂brane系统之间的远程的相互作用的性质正当。我们将在这份报纸提供明确的例子表明这。

简介：Thepurposeofthepresentpaperistoevaluatetheerroroftheapproximationofthefunc-tionfL1[0,1]byKantorovich-BernsteinpolynomialsinLp-metric（0<p<1）.

简介：InthispaperwestudytheconvergencenfaclassofmeansonHp（G）（0<p<1）,themeanstaketheBochner-Rieszmeansin[1],thegeneralizedBochner-Rieszmeansin[2],andtheoperatorsTΦrin[3]asspecialcases.Weobtainweak-typeestimatesfortheassociatedmaximaloperatorsandthemaximalmeanboundednessforthemeans.

简介：P2Psystemsarecategorizedintotree-basedandmesh-basedsystemsaccordingtotheirtopologies.Mesh-basedsystemsareconsideredmoresuitableforlarge-scaleInternetapplications,butrequireoptimizationonlatencyissue.Thispaperproposesacontentsubscribingmechanism(CSM)toeliminateunnecessarytimedelaysduringdatarelaying.Anodecansendcontentdatatoitsneighborsassoonasitreceivesthedatasegment.Noadditionaltimeistakenduringtheinteractivestagespriortodatasegmenttransmissionofstreamingcontent.CSMconsistsofthreesteps.First,everynoderecordsitshistoricalsegmentslatency,andadoptsgammadistribution,whichpossessespowerfulexpressionability,toexpresslatencystatistics.Second,anodepredictssubscribingsuccessratioofeveryneighborbycomparingthegammadistributionparametersofthenodeanditsneighborsbeforeselectinganeighbornodetosubscribeadatasegment.Theabovestepswouldnotincreaselatencyastheyareexecutedbeforethedatasegmentsarereadyattheneighbornodes.Finally,thenode,whichwassubscribedto,sendsthesubscribeddatasegmenttothesubscriberimmediatelywhenithasthedatasegment.ExperimentsshowthatCSMsignificantlyreducesthecontentdatatransmissionlatency.

简介：ThespectrumoftheΣ(1193)excitedstates,Σ,withisospinI=1andstrangenessS=??1isoneofthemostimportantissuesinhadronicphysics.TheΣresonancesaremostlyproducedandstudiedinK-inducedreactions.ManyΣresonancesarenowcatalogedbytheParticleDataGroup[1].However,ourknowledgeoftheseresonancesisstillverypoor.Intheenergyregionbelow2GeV,onlyafewofthemarewellestablished,suchastheΣ(1385)ofspin-parityJP=3=2+,Σ(1670)ofJp=3=2??andΣ(1775)ofJp=5=2??.Theothersarenotwellestablishedandsomeofthemareevenoflargeuncertaintiesontheirexistence.Thus,thestudyoftheΣresonancewiththeavailableexperimentaldataisnecessary.

简介：ＦＩＲＳＴＯＲＤＥＲＱＵＡＳＩＬＩＮＥＡＲＥＱＵＡＴＩＯＮＳＩＮＳＥＶＥＲＡＬＩＮＤＥＰＥＮＤＥＮＴＶＡＲＩＡＢＬＥＳＷＩＴＨＳＩＮＧＵＬＡＲＩＮＩＴＩＡＬＤＡＴＡＬ~ｐ（Ｐ＜∞）￥（赵会江）ＺｈａｏＨｕｉｊｉａｎｇ（ＹｏｕｎｇＳｃｉｅｎｔｉｓｔＬａ?..

简介：

简介：p-ω-低亚硫酸钠正常操作员的近似的点光谱性质被给并且证明。事实上，它是ω-低亚硫酸钠正常操作员的近似的点光谱性质的归纳。系列的关系和p-ω-低亚硫酸钠正常操作员的数字范围被获得。为p-ω-低亚硫酸钠正常操作员T，在另一方面，如果T是正常的，那么，T也是正常的，这被显示出。