学科分类
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18 个结果
  • 简介:Let{X,Xn,n≥1}beasequenceofi.i.d.randomvariableswithzeromean,andsetSn=Σk=1nXk,EX2=σ2>0,λ(ε)=Σn=1∞P(|Sn|≥nε).Inthispaper,wediscusstherateoftheapproximationofσ2byε2λ(ε)undersuitableconditions,andimprovethecorrespondingresultsofKlesov(1994).

  • 标签: 渐近性质 概率 随机变量 近似率 均值 SN
  • 简介:Thispaperemploystherealoptiontheorytodevelopapricingmodelforthetransferofpropertyrights.Welisttheconditionsforthegood,intermediateandbadfirmsrespectively,andworkouttheclosed-formsolutiontotheequilibriumtransferprice,theoptimaltransfertiming.Usingthecomparativestaticanalysis,wefindthatforgoodfirmsthetransferpriceofthetargetisincreasinginitscapital.Thehigherthecapitalofthetargetowns,thefasteritwillbetransferred.Forintermediateandbadfirms,similarconclusionscanbederived.Thelargergapbetweentheacquirer'ssizeandmarketpowerandthoseofthetarget,thelowerthetransfertriggeredprice.Thetransferpricegoesupasthecapitalratiooftheacquireroverthetargetdiminishes,whileitisdecreasingintheamountofthecapitalthetargetowns.

  • 标签: 产权转让 定价模式 市场力 企业 随机 资本金
  • 简介:Thenestednesspropertyhasbecomeanincreasinglyimportantmeansfordevisingefficientalgorithmsfornetworklocationproblems.Therehavebeenattemptstoexplorethenestednesspropertyofnetworklocationproblemswithsomespecialcasesoftheconvexorderedmedianobjectives.However,thereislittleresearchonthenestednesspropertyforthoseproblemswiththeconcaveorderedmedianobjectives.ThispaperconstructsatreenetworkTandshowsthatthenestednesspropertycannotholdfortheconcaveorderedmedianproblem,whichfillsagapintheresearchonthenestednessproperty.Finally,theauthorsposeanopenproblemonidentifyingthenestednesspropertyforthecontinuousstrategicorderedmedianproblem.

  • 标签: 网络问题 属性表 中位数 嵌套 有序 注记
  • 简介:Inthispaper,thenotionoftheboundedcompactapproximationproperty(BCAP)ofapair[Banachspaceanditssubspace]isusedtoprovethatifXisaclosedsubspaceofL∞withtheBCAP,thenL∞/XhastheBCAP.WealsoshowthatX*hastheλ-BCAPwithconjugateoperatorsifandonlyifthepair(X,Y)hastheλ-BCAPforeachfinitecodimensionalsubspaceY∈X.LetMbeaclosedsubspaceofXsuchthatM⊥iscomplementedinX*.IfXhasthe(bounded)approximationpropertyoforderp,thenMhasthe(bounded)approximationpropertyoforderp.

  • 标签: 闭子空间 逼近性质 紧凑型 Banach空间 运营商 共轭
  • 简介:Inthispaper,wediscusstheconceptoffixedpointcurveforlinearinterpolationsofweaklyinwardcontractionsandestablishnecessaryconditionforanonexpansivemappingtohaveapproximatefixedpointproperty.

  • 标签: 不动点性质 收缩 曲线 定点 线性插值
  • 简介:在这份报纸概括非线性的Euler微分方程t2k(tu)u+t(f(u)+k(tu))u+g(u)=0被考虑。这里,函数f(u),g(u)和k(u)满足然而,起始的值问题的解决方案的唯一不潜水艇调节保证的光滑条件(超级)线性被假定。我们在场为相等的平面系统到的一些必要、足够的条件和一些测试有或没能有性质(X+),它为周期的答案和摆动理论的存在是很重要的。

  • 标签: 二阶非线性微分方程 广义非线性 物业 r型 线性假设 充分条件
  • 简介:Inordertostudytheflammabilityandexplosionpropertyofgasesduringthepropaneoxidationtoacrylicacidprocess,theexplosionlimitsandthesafetyoxygencontentofgasesattherecyclegascompressoroutlet,thereactorinlet,andthereactoroutletweretheoreticallycalculatedandexperimentallytested.Finally,theinertlimitwasalsodetermined.Itshowedthatgasesattherecyclegascompressoroutletandthereactoroutletwerenonflammablebasedonthreeindicators:theexplosionlimits,thesafetyoxygencontentandtheinertlimit.TheC3H6andO2contentswerehigheratthereactorinlet,whichmadethemixedgaseseasilyignitable.However,thelargeamountofinertgasessuppressedthepossibilityofexplosioneffectively.Asaconsequence,noexplosionphenomenonwouldhappeninallthreelocations.Butgasesatthereactorinletaremostdangerous,wheremoresupervisionontheconcentrationofgasesandmorestrictcontrolonthetemperatureandpressureshouldbeimplemented.Besidesthis,openflame,hotsurfacesandothersourcesofignitionareprohibitedinworkingspaces.Theexperimentalresultscanbeappliedtosimilarprocessforoxidationofpropane.

  • 标签: 可燃性气体 爆炸性质 丙烯酸 烷氧化 气体压缩机 单步
  • 简介:Thisarticleprovestheexistenceanduniquenessofsolutiontotwo-parameterstochasticVolterraequationwithnon-LipschitzcoefficientsanddrivenbyBrowniansheet,wherethemaintoolisBihari'sinequalityintheplane.Moreover,wealsodiscussthetimeregularitypropertyofthesolutionbyKolmogorov'scontinuitycriterion.

  • 标签: VOLTERRA方程 LIPSCHITZ系数 随机 双参数 正解 柯尔莫哥洛夫
  • 简介:Althoughin-situgrowingcarbonnanotubes(CNTs)oncarbonfiberscouldgreatlyincreasethematrix-dominatedmechanicalpropertiesofcarbon/carboncomposites(C/Cs),italwaysdecreasedthetensilestrengthofcarbonfibers.Inthiswork,CNTswereintroducedintounidirectionalcarbonfiber(CF)preformsbyelectrophoreticdeposition(EPD)andtheywereusedtoreinforceC/Cs.EffectsofthecontentofCNTsintroducedbyEPDontensilepropertyofunidirectionalC/Cswereinvestigated.ResultsdemonstratedthatEPDcouldbeusedasasimpleandefficientmethodtofabricatecarbonnanotubereinforcedC/Cs(CNT—C/Cs)withexcellenttensilestrength,whichpaysameaningfulwaytomaximizetheglobalperformanceofCNT—C/Cs.

  • 标签: 碳复合材料 碳纳米管 拉伸性能 电泳沉积 碳纤维
  • 简介:2013年3月20日,研究论文《VitellogeninReceptorMutationLeadstotheOogenesisMutantPhenotype‘scantyvitellin’oftheSilkworm,Bombyxmori》在《Journalofbiologicalchemistry》杂志在线发表http://www.ncbi.nlm.nih.gov/pubmed/23515308。文章详细地阐释卵黄原蛋白受体在卵的形成及胚胎发育中扮演的重要角色:如果受体缺乏或异常会导致卵不能正常形成,卵中营养物质严重缺乏,最终导致后代不能正常生长而致死。这一结果为鳞翅目害虫的卵黄原蛋白受体的研究奠定了基础,为害虫防治提供了新的靶标基因。

  • 标签: 研究论文 基因克隆 杂志 SILKWORM 卵黄原蛋白 突变
  • 简介:一系列5-phenyl-3H-spiro[indoline-3,2-[1,3,4]thiadiazol]-2-one类似物被综合并且他们的Bcl-2蛋白质禁止的活动被学习。铅混合物原来用荧光被识别基于极化的竞争有约束力的试金。在调查的10混合物之中,1k分别地显示出好有约束力的亲密关系到Bcl-xL和Mcl-1,与8.9mol/L和3.4mol/L的抑制常数。当复合1c完成了紧密的有约束力的亲密关系到Bcl-xL时(Ki=0.16mol/L),有潜力是新铅混合物。

  • 标签: 类似物 生物学评价 合成 苯基 吲哚 二氢