简介：同学们：展示在你们面前的这本书是以华东师范大学版数学实验教材(七年级上)为兰本，按照数学新课程改革的新精神和新要求编写的同步学习用书．这本书将致力于突出数学新课程的基本理念，力求体现学生是学习主人的新课程学习特色，以崭新的内容和新颖的编排向你们展示出一幅幅精美的数学画面，一个个丰富多彩的数学活动，一串串生动有趣的数学问题．它将陪伴你们去观察、实验、探索、推理、交流和议练，在学习过程中获取现实的、有意义的、富有挑战性的数学知识；它将让你在动手实践、自主探索、合作交流、师生互动的学习活动中，更有效地学习数学、理解数学、掌握数学。

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

简介：一系列1,4代用品phthalazine衍生物被设计并且综合。所有准备混合物在vitro对A549，HT-29和MDA-MB-231房间线为他们的细胞毒素的活动被屏蔽。在他们之中，混合物7a鈥?h从1nmol/L与IC50价值为MDA-MB-231房间线显示出优秀选择到0.92渭mol/L。这些衍生物的初步的SAR研究被执行。

简介：给出了极小拟5连通图及围长大于或者等于4的极小拟(k+1)连通图的最小度.

简介：Thepresentpapershowsthatforanysequenceofrealnumberswithinfinitedistinctelements{λ_n},therationalcombinationof{x~λ}arealwaysdenseinC_[0,1].

简介：Aseriesof1-naphthylmethylmethacrylate（NMMA）-methylmethacrylate（MMA）copolymersweresynthesizedonfreeradicalmechanism.ThereactivityratiosofNMMA（r1）andMMA（r2）werereportedtobe0.83and0.89,respectively.ThecharacterizationofthecopolymersbyusingIR,NMR,GPC,UVandfiuorescencespectrometrywasdescribedinthispaper.

简介：Let(.theMuckenhouptclass).Inthispaper,theauthorintroducetheweightedHerz-typeHardyspaces(w2)andpresenttheiratomicdecomposition.Usingtheatomicdecomposition,theauthorfindouttheirdualspaces,establishtheboundednessonthesespacesofthepseudo-differentialoperatorsoforderzeroandshowthat,theclassofC(Rn)-functionswithcompactlysupport,isdenseinandthereisasubsequence,whichconvergesindistrbutionalsensetosomedistributionof,ofanyboundedsequenceinInaddition,theauthoralsosetuptheboundednessofsomenon-linearquantitiesincompensatedcompactness.

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简介：Thestudyofnucleonresonanceisanimportanttopicinhadronphysics.Themostimportantwaytostudythenucleonresonancesisthecollisionofthephotonandnucleon.Uptonow,theknowledgeaboutthenucleonresonancesaround2GeVisstillscarce.Recently,theCLASCollaborationatJeffersonNationalAcceleratorFacilityreleasedtheirexclusivephotoproductioncrosssectionsfortheΛ(1520),Σ0(1385)andΛ(1405)forenergiesfromnearthresholduptoacenterofmassenergyWof2.85GeVwithlargerangeoftheKproductionangle[1].SincethethresholdforthephotoproductionofΛ(1520)isabout2.01GeV,thenewexperimentaldatawithhighprecisionreleasedbytheCLASCollaborationprovideanopportunitytostudythenucleonresonancesabove2GeV.

简介：LinuxbasednetworkedPCsclustersarereplacingboththeVMEnonuniformdirectmemoryaccesssystemsandSMPsharedmemorysystemsusedpreviouslyfortheonlineeventfilteringandreconstrucion.ToallowanoptimaluseofthedistributedresourcesofPCclustersanopensoftwareframeworkispresentlybeingdevelopedbasedonadataflowparadigmforeventprocessing.Thisframeworkallowsforthedistributionofthedataofphysicseventsandassociatedcalibrationdatatomultiplecomputersfrommultipleinputsourcesforprocessingandthesubsequentcollectionoftheprocessedeventsatmultipleoutputs.Thebasisofthesystemistheeventrepository,basicallyafirst-infirst-outeventstorewhichmaybereadandwritteninamannersimilartosequentialfileaccess.Eventsarestoredinandtransferredbetweenrepositoriesassuitablylargesequencestoenablehighthroughput.Multiplereaderscanreadsimultaneouslyfromasinglerepositorytoreceiveeventsequencesandmultiplewriterscaninserteventsequencestoarepository,Hencerepositoriesareusedforeventdistributionandcollection.Tosupportsynchronisationoftheeventfolowtherepositoryimplementsbaaiers.Abarriermustbewrittenbyallthewritersofarepositorybeforeanyreadercanreadthebarrier,Areadermustreadabarrierbeforeitmayreceivedatafrombehindit.Onlyafterallreadershavereadthebarrieristhebarrieremovedfromtherepository.Abarriermayalsohaveattacheddata,Inthiswaycalibrationdatacanbedistributedtoallproessuingunits.Therepositoriesareimplementedasmulti-threadedCORBAobjectsinC++andCORMAisusedforalldatatransfers,JobsetupscriptsarewritteninpythonandinteractivestatusandhistogramdisplayisprovidedbyaJavaprogram.JobsrununderthePBSbatchsystemprovidingshareduseofresourcesforonlinetriggering,offlinemassreporcessinganduseranalysisjobs.

简介：考虑带启动期的Geo／Geo／1单重工作休假排队系统，简记为Geo／Geo／1／SWV。服务台在休假期间，不是立即停止服务，而是以较低的服务率为顾客提供服务。应用拟生灭链以及矩阵几何解的方法，本文给出了稳态下顾客数的概率分布、平均队长以及顾客的平均逗留时间，最后通过数值例子说明我们的模型可以较好的模拟一些实际问题。

简介：首先运用Phillips定理和Fattorini定理证明M/Mk,B/1排队模型概率瞬态解的存在唯一性,然后通过研究对应于M/Mk,B/1排队模型的主算子的共轭算子的豫解集得到该主算子的豫解集:在虚轴上除了零点外其它所有点都属于该主算子的豫解集.

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简介：ThequalitativepropertiesofapredatorpreysystemwithHolling-(n+1)functionalresponseandafairlygeneralgrowthratearecompletelyinvestigated.Thenecessaryandsufficientconditiontoguaranteetheuniquenessoflimitcyclesisgiven.Ourworkextendsthepreviousrelevantresultsinthereference,

简介：Thesymmetryenergywhichcharacterizestheisospindependenceoftheequationofstateofasymmetricnuclearmatter,playsacrucialroleinunderstandingavarietyofissuesinnuclearphysicsandastrophysics,suchasheavyioncollisions,exoticnuclei,stabilityofsuperheavynuclei,fusioncrosssections,thestructures,compositionandcoolingofneutronstars[1??5].Muchtheoreticalandexperimentalefforthasbeenmadetoconstrainthedensitydependenceofsymmetryenergy.Uptonow,wehavegotsomebasicknowledgeaboutthesymmetryenergyatlowdensities,whileathighdensitiesweevendonotknowitsvariationtendencyasafunctionofdensity.Theproblemremainsunsolvedduetothedifficultyofnucleon-nucleoninteractionsandmany-bodyproblems.

简介：在这份报纸，我们与安装时间和多重假期认为BMAP/G/1是G队列。积极顾客和否定顾客的到达分别地跟随一个批Markovian到达过程(BMAP)和Markovian到达过程(地图)。当服务者正在工作时，一个否定顾客的到达在系统移开所有顾客。一旦系统倒空，服务器为一个假期离开并且被允许拿重复(多重)假期。由使用增补变量方法和审查技术，我们获得队列长度分布。我们也基于更新理论获得忙时期的平均数。

简介：InthispaperwestudythetheoreticalpropertiesofmultigridalgorithmfordiscretizationofthePoissonequationin2Dusingamortarelementmethodundertheassumptionthatthetriangulationsoneverysubdomainareuniform.WeprovetheconvergenceoftheW-cyclewithasufficientlylargenumberofsmoothingsteps.ThevariableV-cyclemultigridpreconditionerarealsoavailable.

简介：Pelletinjectionexperimentshavebeenwidelycarriedoutwithvarioustoroidalplasmas,peakeddensityprofileandimprovedconfinementarefrequentlyobserved,andsomeinterestingphenomenahavealsobeenfound.Oneofthemisthelong-livedm=1/n=1oscillationobservedonsoftX-rayemissionandotherdiagnostics(notablythemicrowaveinterferometersandtheECEsystems)afterpelletinjectioninJET,JT-60,

简介：Inthispaper,thekernelofthecubicsplineinterpolationisgiven.Anoptimalerrorboundforthecu-bicsplineinterpolationoflowersmoothfunctionsisobtained.

简介：ZN-1阻尼材料是以丁基橡胶为基与酚醛树脂共混而成的粘弹性阻尼材料，具有损耗系数高、使用温度区域宽、转变峰的峰值温度在室温附近、抗老化性能优异等特点，在阻尼夹层结构中有着广泛的应用。