学科分类
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207 个结果
  • 简介:如果企业发生销售已使用过的固定资产业务时,手工会计只需由不同部门填写形成相应的会计凭证即可,但采用ERP系统进行管理,应该通过数据流有序流转,从而做到职能间的高度集成。用友ERP-U8V10.1版本软件有效地解决了固定资产采购的数据流转,但固定资产销售业务似乎没有得到有效解决,下面以实例分析探讨更为合理的解决办法。

  • 标签: 销售业务 固定资产 环境 数据流转 手工会计 ERP系统
  • 简介:在旅行波浪转变下面,一些非线性的部分微分方程例如Camassa河边肥沃的低地方程,高顺序的KdV方程,等等,被归结为u″表示的一首integrable颂诗+p(u)(u')2+q(u)=0答案能被给其将军。而且,为多项式联合完全的辨别系统,这些方程的所有单个旅行波浪答案的分类被获得。方程u″0包括的+p(u)(u')2+q(u)=是的方程(u')2=f(u)一种特殊情况,建议方法能也因此被用于很多非线性的方程。这些完全的结果不能被任何间接方法获得。

  • 标签: 数学物理方法 非线性数学物理方程 孤波解 对称群 非线性偏微分方程
  • 简介:theAlternatingSegmentCrank-Nicolsonschemeforone-dimensionaldiffusionequationhasbeendevelopedin[1],andtheAlternatingBlockCrank-Nicolsonmethodfortwo-dimensionalproblemin[2].Themethodshavetheadvantagesofparallelcomputing,stabilityandgoodaccuracy.Inthispaperforthetwo-dimensionaldiffusionequation,thenetregionisdividedintobands,aspecialkindofblock.ThismethodiscalledthealternatingBandCrank-Nicolsonmethod.

  • 标签: 二维空间 分布函数 有限微分方程 边界条件
  • 简介:Thestudyonthedecaypropertiesofnewisotopeslocatedfarfromthebetastabilitylineiscurrentthefocusofnuclearphysics.ForisotopesintheregionZ>82andN<126,-emissionprevailsasradioactivedecaymodeand-spectroscopyisthemostimportanttooltoobtaininformationonthenuclearstructure.IntheheavynucleiregionwithN=124and126isotones,anintruderstate(h9=2.f7=2)8+basedontheattractiveinteractionoff7=2protonsandf5=2neutronshasbeensignificantlyobserved,whichincreasesthebindingenergyofthisconfigurationwithincreasingprotonnumber.

  • 标签: Multi-nucleon TRANSFER REACTIONS
  • 简介:ThecomplexK3H4GeW9V3O40·8H2OcrystallizedinamonocliiniesystemwithspacegroupP2,Mr=2784.67,a=11.099(3),b=16.452(4),c=13.534(4),β=108.14°,Z=2,V=2348.493,F(000):2456,μ=239.7cm-1,De=3.932g/cm3.ThefinalR=0.083for4528non-zeroreflexions.ThestructureofanionsGeW9V3O40andGeW9O34belongstoA--type.

  • 标签: belongs crystallized STIRRING tetra slightly SUBSTITUTION
  • 简介:Inthisarticle,thegeneralcentrallimittheoremandBerry-Esseenboundsforfinite-populationU-statisticswithdegreemareestablishedundertheveryweakconditions,TheseresultssubstantiallyimprovethoseofZhaoandChen’s(1987).

  • 标签: BOUNDS BERRY BOREL KERNEL proof FORMULAE
  • 简介:Anewcompoundbasedonpolyoxovanadate[{Ni(en)2}2Sb8V14O42]·5.5H2O(en=ethylenediamine)(1)wassynthesisedhydrothermallyasblackrhombuscrystals.Compound1crystallizedinthemonoclinicsystemwithspacegroupP21/n,Z=4,a=1.46953(9)nm,b=1.28623(8)nm,c=1.76008(11)nm,β=105.7230(10)°.Intheasymmetricunit,cluster{Sb8V14O42}canbeconsideredasanSbderivativeofthe{V18O42}unit.Each{Sb8V14O42}clusterasabuildingblockinterconnectedtofourotherneighboringunitsby{Ni(en)2}bridginggroupswhicharelinkedthroughtheterminaloxygenatomsofthepolyoxoanions,formingatwodimensionalnetwork.

  • 标签: 中文 水热合成 复合物 二维 晶体
  • 简介:Inthispaper,weshowthatapositiverecurrentuidqueueisautomaticallyV-uniformlyergodicforsomefunctionV≥1butneveruniformlyergodic.Thisrevealsasimilarityofergodicitybetweenafluidqueueandaquasi-birth-and-deathprocess.AsabyproductofV-uniformergodicity,wederivecomputableboundsontheexponentialmomentsofthebusyperiod.

  • 标签: UID QUEUES QBD processes ERGODICITY the
  • 简介:U-shapedmicro-nanochannelscangeneratesignificantflowdisturbanceaswellaslocallyamplifiedelectricfield,whichgivesitselfpotentialtobemicrofluidicmixers,electrokineticpumps,andevencelllysisprocess.NumericalsimulationisutilizedinthisworktostudythehiddencharacteristicsoftheU-shapedmicro-nanochannelsystem,andtheeffectsofkeycontrollingparameters(theexternalvoltageandpressure)onthedeviceoutputmetrics(current,maximumvaluesofelectricfield,shearstressandflowvelocity)wereevaluated.Alargeportionofcurrentflowingthroughthewholesystemgoesthroughthenanochannels,ratherthanthemiddlepartofthemicrochannel,withitsvalueincreasinglinearlywiththeincreaseofvoltage.Duetothelocaliondepletionnearmicro-nanofluidicjunction,significantlyenhancedelectricfield(asmuchas15foldatV=1VandP0=0)aswellasstrongshearstress(leadingtoelectrokineticflow)isgenerated.Withincreasingexternalpressure,bothelectricfieldandshearstresscanbeincreasedinitially(duetoshorteningofdepletionregionlength),butaresuppressedeventuallyathigherpressureduetothedestructionofiondepletionlayer.Insightsgainedfromthisstudycouldbeusefulfordesigningnonlinearelectrokineticpumpsandothersystems.

  • 标签: U-SHAPED micro-nanochannels ELECTROKINETIC flow MAXIMUM SHEAR
  • 简介:Modelinglog-mortalityratesonO-UtypeprocessesandforecastinglifeexpectanciesareexploredusingU.S.data.IntheclassicLee-Cartermodelofmortality,thetimetrendandtheage-specificpatternofmortalityoveragegrouparelinear,thisisnotthefeatureofmortalitmodel.Toavoidthisdisadvantage,O-Utypeprocesseswillbeusedtomodelthelog-mortalityinthispaper.Infact,thismodelisanAR(1)process,butwithanonlineartimedriftterm.BasedonthemortalitydataofAmericafromHumanMortalitydatabase(HMD),mortalityprojectionconsistentlyindicatesapreferenceformortalitywithO-UtypeprocessesoverthosewiththeclassicalLee-Cartermodel.Bymeansofthismodel,thelowboundsofmortalityratesateveryagearegiven.Therefore,lengtheningofmaximumlifeexpectanciesspanisestimatedinthispaper.

  • 标签: MORTALITY STOCHASTIC forecasting O-U TYPE process
  • 简介:TheV^t-integralasdefinedin[2],whichiseqnivalenttoM^2-integrslasdefinedinTrigonometreseriesbyZygmundisusedtosumtrigonometricseiesin[1].Inthispaper,someconvergenttheoremsofV^2-integralareestablished.

  • 标签: V^t-积分 单调性 收敛定理 振动函数 三角序列
  • 简介:Rotation in Reaction 19F+51VRotationinReaction19F+51V¥WangQi;LuJun;XuHushan;LiSonglin;ZhuYongtaiandZhangYuhuIndLssi...

  • 标签:
  • 简介:Threeheterobinuclearcomplexesweresynthesized,namely[Cu(oxpn)Co(L)2](ClO4)2·xH2O(L=2,2’-bipyridyl(bpy),1,10-phenanthroline(phen),and5-nitro-1,10-phenanthroline(NO2-phen)),whereoxpnrepresentsN,N’-bis(3-aminopropyl)oxam-ido.Basedon1R,elementalanalysis,conductivitymeasurementandelectronicspectra,thesecomplexeswerecharacterizedbyanextendedoxamido-bridgedstructurewithCu(Ⅱ)inaplanarenvironmentandCo(Ⅱ)inaoctahedralenvironment.ThesymmetryofthecationisveryclosetoC2v.Thecomplexeswerealsocharacterizedwithvariabletemperature(4~300K)magneticsusceptibility,andthedatawerefitforthesusceptibilityequationderivedfromspinHamilton,H=-2JS1.S2-DSx12byleastsquarestrategy.Theexchangeintegral,J,wasfoundtobe-22.36cm-1(forbpy);-15.45cm-1(forphen);-19.10cm-1(forNO2-phen),indicatingthatthereisaweakantiferromagneticspin-exchangeinteractionbetweenthemetalions.

  • 标签: Oxamido-bridge Copper(Ⅱ)-cobalt(Ⅱ) COMPLEXES MAGNETISM