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简介：Denotebyn（f）thedegreeofcopositiveapproximationtof（x）bypolynomialsofdegree≤n.Forfunctionf（x）∈Ck[-1,1]whichalternatesinsignfinitelymanytimesin[-1,1],theauthorobtainsthefollowingJacksontypeestimatesn（f）≤Cn-kw(fk,1/n)foaanypositiveintegerk.

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简介：AgraphGisκ-orderedHamiltonian2≤κ≤n,ifforeveryorderedsequenceSofκdistinctverticesofG,thereexistsaHamiltoniancyclethatencountersSinthegivenorder,Inthisarticle,weprovethatifGisagraphonnverticeswithdegreesumofnonadjacentverticesatleastn+3κ-9/2,thenGisκ-orderedHamiltonianforκ=3,4,…，[n/19].Wealsoshowthatthedegreesumboundcanbereducedton+2[κ/2]-2ifκ(G）≥3κ-1/2orδ（G）≥5κ-4.Severalknownresultsaregeneralized.

简介：BasedontheX-rayscatteringintensitytheory,thecorrectionfactorsofthedegreeofcrystallinityformulaeofthemulticomponentpolymershavebeenclearlydefined.TheformulaeofthedegreeofcrystallinityofthemulticomponentpolymerswerederivedintermsofWAXDtheoryandimprovedgraphicmultipeakresolutionmethods.Theresultscalculatedaresatisfactoryincomparisonwiththedensitymeasurement.

简介：Abstract.Inthispaper,weintroduceanewapproachtocharacterizetheisomor-phismsofcirculantdigraphs.Intermsofthismethod,wecompletelydeterminetheisomorphicclassesofcirculantdigraphsofdegree3.Inpsrticular,wecharacterizethosecirculantdigraphsofdegree3whichdon''tsatisfyJkdAm''sconjectttre.

简介：让n和k(n≥k>1)是二个非否定的整数。n顶点上的k-multi-hypertournament是对(V，一)，在V是有|V的一套顶点的地方|=n，和A是顶点的一套k元组，为V的任何k子集S叫了弧，A包含至少一个(至多k!)k！其条目属于S的k元组。为是某k-multi-hypertournament的外面度顺序(在里面度顺序)的非否定的整数的一个不减少的序列的必要、足够的条件被给。

简介：AsetDofverticesofagraphG=(V,E)iscalledadominatingsetifeveryvertexofVnotinDisadjacenttoavertexofD.In1996,Reedprovedthateverygraphofordernwithminimumdegreeatleast3hasadominatingsetofcardinalityatmost3n/8.InthispaperwegeneralizeReed'sresult.WeshowthateverygraphGofordernwithminimumdegreeatleast2hasadominatingsetofcardinalityatmost(3n+|V_2|)/8,whereV_2denotesthesetofverticesofdegree2inG.Asanapplicationoftheaboveresult,weshowthatfork>1,thek-restricteddominationnumberr_k(G,y)<(3n+5k)/8forallgraphsofordernwithminimumdegreeatleast3.

简介：ThispaperstudyupthecontributiondegreeanddevelopmentpoliciesofservicetradetoBeijingeconomybymacroeconomicmodelingmethod.TheresultshowscontributiondegreeofservicetradetoBeijingeconomyis2.419.

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简介：在这个工作，我们以它的最小的度和它的顺序为任何图的直径获得好上面的界限，改进由于Erd的一条古典定理?s，Pach，绿鳕和Tuza。我们使用这些界限以便学习夸张的图(在Gromov意义)。计算hyperbolicity常数是一个几乎难处理的问题，这样试着以图的一些参数围住它是自然的。让H(n，0)是有n顶点和最小的度0,和J的图G的集合(n，)是有n顶点和最大的度的图G的集合。我们在图上学习四个后面的extremal问题：一(n，0)=min{(G)|GH(n，0)},b(n，0)=最大{(G)|GH(n，0)},(n，)=min{(G)|GJ(n，)}并且(n，)=最大{(G)|GJ(n,)}。特别地，我们为b获得界限(n，0)和我们计算精确价值一(n，0),(n，，并且()，并且(n，)为n的所有价值，0并且分别地。

简介：XinhuaNewsAgency,Beijing,March25OnMarch25,MinistryofEducationissuedNoticeoftheStateCouncilDegreeCommitteeonSpecialEvaluationResultofDegreeConferralInstitutionsandRelevantHandlingOpinionsin2014.TheNoticestipulates

简介：Wemeasuretheelectromagneticdegreeoftemporalcoherenceandtheassociatedcoherencetimeforquasi-monochromaticunpolarizedlightbeamsemittedbyanLED,afilteredhalogenlamp,andamultimodeHe–Nelaser.ThemethodisbasedonobservingattheoutputofaMichelsoninterferometerthevisibilities(contrasts)oftheintensityandpolarization-statemodulationsexpressedintermsoftheStokesparameters.Theresultsareingoodagreementwiththosededuceddirectlyfromthesourcespectra.Themeasurementsarerepeatedafterpassingthebeamsthroughalinearpolarizersoastoelucidatetheroleofpolarizationinelectromagneticcoherence.Whilethepolarizervariestheequal-timedegreeofcoherenceconsistentlywiththetheoreticalpredictionsandalterstheinnerstructureofthecoherencematrix,thecoherencetimeremainsalmostunchangedwhenthelightvariesfromunpolarizedtopolarized.Theresultsareimportantintheareasofapplicationsdealingwithphysicalopticsandelectromagneticinterference.

简介：Objective:Toinvestigatetheeffectof360-degreeretinectomyforsevereocularruptureandevaluatetherelatedfactorsassociatedwithprognosis.Methods:Aretrospectiveanalysiswasperformedon28consecutivepatients,18menand10women,withsevereocularruptureadmittedtotheChinesePLAGeneralHospitalbetweenJanuary1999andJanuary2002.Thepatients'agesrangedfrom16to58years,mean29.5years.Alloperationswereperformedbythefirstauthor.Allpatientsunderwentstandard3-portparsplanavitrectomywithscleralencirclingbuckle,endophotocoagulation,andtamponadedwithsiliconeoil.Lensectomywereperformedon15eyes.360-degreeretinotomyandretinectomywereperformedatanteriorequatoron16eyes,andposteriorequatoron12eyes.Results:Duringoperation,allpatientswereconfirmedtohavevitreoushemorrhageandretinaldetachment,inwhichhemorrhagicciliarybodydetachmentwasfoundin9eyes,suprachoroidalhemorrhagein12eyes,retinaltwistinglikeflowerstalkin11eyes,andretinalincarcerationin17eyes.Postoperativefollow-upwasconductedin26cases,rangedfrom6monthsto46months.Retinalreattachmentachievedin20eyes(76.9%),inwhichthreepatients'retinawasreattachedafterrevitrectomy.Thesiliconeoilwasremovedatthefourthmonthin8eyespostoperatively.Correctedvisualacuityof0.02ormorewasin14eyes(70.0%)amongthe20patientswithreattachedretina.Visualacuityof0.05ormorewasin7eyes(35.0%),and0.1ormorewasin3eyes.Thebestvisualacuitywas0.3in1eye.Conclusions:Retinectomymayimprovetheprognosisofsevereocularruptureandsavethevisualfunctionofsomepatients.

简介：与它的主要的图联系的有限的组G的度模式被Moghaddamfar在2005介绍了，下列简单的组被他们的顺序和度模式特别地决定，这被证明：所有分散的简单的组，轮流出现的组Ap(p5是一个成双的素数)并且谎言的一些简单的组打字。在这份报纸，作者继续这调查。特别地，作者证明对称的组Sp+32是的p+4是的合成数字和p+一个素数并且97

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简介：让G没有固定的点在的一个集合上的一个排列组，和m是一个积极整数。然后，G的运动被定义为行动(G)：=supG{|Gg\G|g？G}行动(G)：=\mathop{\sup}\limits_\Gamma\left\{{\left|{\Gamma^g\backslash\Gamma}\right|\left|{g\inG}\right}\right\}。它被Praeger显示出如果行动(G)=m那时|3m+t1，在t是G轨道在上的数字的地方。在这份报纸，有有最大值的度3m+t1的所有不及物的排列组跳了被分类。确实，她问题的一个积极答案是否上面的界限|=3m+t1为|为每t是锋利的>1被给。

简介：ThispaperdevelopsaclaseofquadratureformulawithfirstderivativesItisdemonstratedthatitsdegreeofaccuracyisnotlessthan2k+1forasetofdistinctnodes{x0,x1,...,xn}overinterval[a,b],andjustonly2k+1forequallyspacednodes.FarovercomingtheshortcomingofinvolvingagreatnumberofmanualcomputationsfortheintegrationrulesoftheHermitianinterpolationformula,somesimpleformulasforcomputingautomaticallyβi,γiandE[f]bycomputeraregiven,especiallyforequallyspacednodes.

简介：Aprimitiveequationmodelwithazonaldomainandap-σincorporatedverticalcoordinatesystemisusedtostudytheeffectsoftheenvelopedegreeoforographyonthesimulatedpropertiesofbothwinterandsummerclimates.Resultsshowthattheorographywithalargerenvelopedegreecanim-provethesimulationstocertainextent,especiallyinwinter.Itisfoundthatthesimulatedpropertiesofclimatearemainlydeterminedbytheco-effectsoftheland-seaandtheorographicdistributions,andtheenvelopedegreeoforographyhasasecondaryeffect.Howeveritshouldbetakenproperlyinordertoimprovesimulations:otherwise,itwouldbeharmful.Differentenvelopedegreesoforogra-phycanbeadoptedindifferentareas.