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:自然数集按(mod6)排列后,将自然数符号螺旋对称分布的规律与自然律有机关联起来研究,从中发现数集中部分合数M中所包含相同素因子P,q周期分布与等距传递的规律,即双重素数P,q实项、虚项原构、同构同因子对应组螺旋对称分布结构的形式与规律,可模拟宇宙万物的时空螺旋运动状态,模拟DNA双螺旋结构碱基(A、T、G、C)序列遗传密码结构与形式。亦可作为一种创新方法开发应用研究,为研究DNA序列结构的数学编码,研究宏观宇宙、中观生物、微观质量的对应螺旋运动状态,预测宇宙万物相互关联相互作用的变化规律与趋势,构建基于宇宙中空时序的自然数双重素数因子对应组(多组)螺旋延伸的数码模型,高度抽象探讨与理解宇宙万物运动变化的原本规律,为相关问题的表述与解决提供数码螺旋的解决方案。
简介:Wereportthestudyofalowtemperatureclusterglassstatein5%Mn-dopedUGa3heavyfermioncompound.Thiscompoundtransformsfromaparamagneticstatetoaspin-clusterglassstate,whichisconfirmedbymeasuringthedcsusceptibilityandmagnetization.Theacsusceptibilityexhibitsafrequency-dependentpeakaroundTf,whichprovidesdirectevidenceoftheclusterglassstate.Byanalyzingthefield-dependentmagnetizationandfrequency-dependentacsusceptibilityindetail,wededucethatthiscompoundformsaspin-clusterglassstatebelowTf.
简介:Thespectrumofisospin3/2Δ++(1232)excitedstatesisoneofthemostimportantissuesinhadronicphysicsandisattractingmuchattentionbecauseitisthemostexperimentallyaccessiblesystemcomposedofthreeidenticalvalencequarks.However,ourknowledgeontheseresonancesmainlycomesfromoldNexperimentsandisstillverypoor[1].Intheenergyregionaroundorabove2.0GeV,therearestillmanytheoreticalpredictionsofmissingΔstateswhichhavesofarnotbeenobserved.Searchingforthesemissingstatesfromotherproductionprocessesisnecessary.ApossiblenewexcellentsourceforstudyingtheseΔresonancecomprisesthe+p!K+Σ+(1385)andpp!nK+Σ+(1385)reactions,whichhaveaspecialadvantage,i:e:,thereisnocontributionsfromisospin1/2nucleonresonancesduetotheisospinandchargeconservations.
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.