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319 个结果
  • 简介:Basedupontheresearchtotheeconomicequilibriumproblems,wepresentakindofnewmathematicalprogrammingproblem-interactionprogrammingproblem(abbreviatedbyIPP).TheIPPiscomposedoftwoormultipleparametricprogrammingproblemswhichisinterrelatedwitheachother.TheIPPreflectstheequalityandmutualbenefitrelationshipbetweentwo(oramongmultiple)economicplannersinaneconomicsystem.Inessence,theIPPissimilartothegeneralizedNashequilibria(GNE)gamewhichhasbeengivenseveralnamesintheliterature:socialequilibriagames,pseudo-Nashequilibriagames,andequilibriumprogrammingproblems.Inthispaper,weestablishthemathematicalmodelandsomebasicconceptstotheIPP.WeinvestigatethestructureandthepropertiesoftheIPP.WealsogiveanecessaryandsufficientconditionsfortheexistenceoftheequilibriumpointstoakindoflinearIPP.

  • 标签: Interaction PROGRAMMING problem EQUILIBRIUM POINTS PARTIAL
  • 简介:本文分析了教师在课堂教学中所起的主导作用,引出以学生为主体的教学风格,同时对传统的语法讲解为主要内容的教学方法和交际法教学进行了得失比较,对交际法实施的原则进行了讨论。

  • 标签: teacher—centered COMMUNICATIVE APPROACHES the WEAK version
  • 简介:Thegenerationofplasmawhichcanabsorbmicrowavesiscurrentlyaresearchtopicofinterest.Thiskindofplasmaisoftenproducedbythedischargeorelectron-beamimpactofnoblegases.Inthispaperanalternaticeapproach,combustionplasma,isstudied.Theplasmaisproducedbycombustingsolidgrainspreparedspecially.Sixgroupsofpowdersweremadeandusedtogeneratetheplasma.Thetransmissivityofthewaveinplasmawasmeasuredbyemployingamicrowavescalarnetworkanalysersystem.Inaddition,theelectrondensityandthecollisionfrequencyoftheplasmawereexaminedbymicrowavedouble-frequencydiagnosis.Themeasurementresultsshowedthattheplasmacouldabsorbmicrowavesremarkablywithanaveragetransmissionattenuationbeingmorethan18dBinafrequencyrangeof2GHzto15GHz.Thediagnosisindicatedthattheelectrondensityoftheplasmavariedfrom10~(17)m~(-3)to10~(19)m~(-3)andthecollisionfrequencywasabout5×10~(10)s~(-1).

  • 标签: 碰撞等离子体物理 微波 相互作用 吸收
  • 简介:Thispaperstudiestheinteractionofshockandgradientwave(soundwave)ofsolutionstothesystemofinviscidisentropicgasdynamicsasamodelforthecorrespondingproblemsfornonlinearhyperbolicsystems.Theproblemcanbereducedtoaboundaryvalueprobleminawedgeddormain,ByusingthemethodofconstructingasymptoticsolutionsandNewton'siterationprocessitisprovedthatifaweakshockhitsagradientwave,thenthegrandientwavewillsplitintotwogradientwaves,whiletheshockcontinusespropagating.Inthispapertheauthorreducestheproblemtoastandardformandconstructsasymptoticsolutionoftheproblem.Theexistenceofthegenuinesolutionwillhegiveninthefollowingpaper.

  • 标签: 震动交感 声波 气体动力学 数学模型
  • 简介:Anoveltheoreticalmodelofthermaldiffusionhasbeenestablishedtostudythermalinteractionbetweentwoneighboringdiodsinsemiconductorlaserarrays.Themaincauseoftheocurrenceofthethermalinteractionbetweentwoneighboringdiodesinarraydevicesistheheatconductionthroughheatsink.Weholdthatasthedevicesmusyhaveheatsinktodiffuseheat,thiskindofinteractioninthearraywouldalwaysexist.However,whenthepitchbetweentwoneighboringdiodesinthearrayisreasonablydefined,thistroublesomethermalinteractioncanbesimplyreducedbyusingourmodel.Basedontheindividualdiodeswithleakywaveguidestructure,weexperimentallysucceededinfabricating2D4×4arrays.Thethermalinteractionbetweenupperandlowerdiodesinthe2Darrayisalsoconsideredaswellasthefunctionoftheheatsink.Themeasuredresultsshowthatthepulsepeakoutputpowerofthe2D4×4arrayishighupto11W.

  • 标签: 热交互作用 热扩散 二维列车 开槽波导 半导体激光器
  • 简介:Versicanbelongstothefamilyofthelargeaggregatingchondroitinsulfateproteoglycanslocatedprimarilywithintheextracellularmatrix(ECM).Versican,likeothermembersofitsfamily,hasuniqueN-andC-terminalglobularregions,eachwithmultiplemotifs.Alargeglycosaminoglycan-bindingregionliesbetweenthem.Thisreviewwillbeginbyoutliningthesestructures,inthecontextofECMproteoglycans.Thediversebindingpartnersaffordedtoversicanbyvirtueofitsmodulardesignwillthenbeexamined.TheseincludeECMcomponents,suchashyaluronan,typeⅠcollagen,tenascin-R,fibulin-1,and-2,fibrillin-1,fibronectin,P-andL-selectins,andchemokines.VersicanalsobindstothecellsurfaceproteinsCD44,integrinβ1,epidermalgrowthfactorreceptor,andP-selectinglycoproteinligand-1.Thesemultipleinteractorsplayimportantrolesincellbehaviour,andtherolesofversicaninmodulatingsuchprocessesarediscussed.

  • 标签: 交互作用 粘合物 细胞外矩阵 蛋白聚糖 粘多糖
  • 简介:Inmanytissuestheparasympatheticandsympatheticnervoussystemregulatesmoothmusctoneviatheirtransmittersaeetylcholineandnoradrenaline,respectively.Directsmoothmusceeeffectsofacetylcholineviamuscarinicreceptorsalwayspromotecontraction,butnon-neuronalsourcescanimportantlycontributetosuchstimulation.Directsmoothmuscleeffectsofnoradren-alinecanpromotecontractionviaal-andsometimesalsoα2-adrenoceptorsbutcanpromotere-laxationandinhibitcontractionviaβ-adrenoceptors.Iwillfocusontheinteractionbetweensub-typesofmuscarinicandβ-adrenergicreceptors,largelyusingtheurinarybladderasanexam-ple.

  • 标签: VIA can TONE ALSO BUT
  • 简介:Asystematicprocedureisproposedforobtainingsolutionsforsoli-tarywavesinstratifiedfluids.Thestratificationofthefluidisassumedtobeexpo-nentialorlinear.Itscomparisonwithexistingresultsforanexponentiallystratifiedfluidshowsagreement,anditisfoundthatfortheoddseriesofsolutionsthedirec-tionofdisplacementofthestreamlinesfromtheirasymptoticlevelsisreversedwhenthestratificationischangedfromexponentialtolinear.Finallytheinteractionofsolitarywavesisconsidered,andtheKorteweg-deVriesequationandtheBoussinesqequationarederived.Thustheknownsolutionsoftheseequationscanberehedupontoprovidetheanswerstotheinteractionproblem.

  • 标签: INTERNAL SOLITARY WAVES stratified liquids exponential
  • 简介:Withtherapidprogressofcomponenttechnology,thesoftwaredevelopmentmethodologyofgatheringalargenumberofcomponentsfordesigningcomplexsoftwaresystemshasmatured.But,howtoassesstheapplicationreliabilityaccuratelywiththeinformationofsystemarchitectureandthecomponentsreliabilitiestogetherhasbecomeaknottyproblem.Inthispaper,thedefectsinformaldescriptionofsoftwarearchitectureandthelimitationsinexistedmodelassumptionsarebothanalyzed.Moreover,anewsoftwarereliabilitymodelcalledComponentInteractionMode(CIM)isproposed.Withthismodel,theproblemforexistedcomponent-basedsoftwarereliabilityanalysismodelsthatcannotdealwiththecasesofcomponentinteractionwithnon-failureindependentandnon-randomcontroltransitionisresolved.Atlast,thepracticeexamplesarepresentedtoillustratetheeffectivenessofthismodel.

  • 标签:
  • 简介:Characteristicsofinteractionbetweendi-2-ethylhexylphthalate(DEHP)andparticulateinaeutrophiclakewerestudiedinthispaper.DEHPconcentrationsrangedfrom89.9to247μg/Lwithanaveragevalueof146μg/Linsubsurfacewater(SSW)samples,andfrom82.0to390μg/Lwithanaveragevalueof211μg/Linwatersurfacemicrolayer(SM)samples.TheresultsindicatethattherewasonlyaweakcorrelationbetweentheDEHPconcentrationsandsuspendedparticulatematerial(SPM)concentrationsinbothSSWandSM,whilethesignificantcorrelationbetweenDEHPconcentrationsandchlorophyllaconcentrationswasfound,whichsuggestesthatDEHPwasprincipallyboundtophytoplanktonintheeutrophiclake.CorrelationbetweenDEHPconcentrationsandtotalphosphor(TP)concentrationswasalsofoundinthisinvestigation.Enrichmentfactors(EF)ofDEHPinSMwereintherangeof0.85to2.12withanaveragevalueof1.35.DEHPEFsweresignificantlyrelatedtotheenrichmentofchlorophyllainSM.TheresultssuggestthattheenrichmentofDEHPinSMofthiseutrophiclakewasmainlyduetoDEHPaccumulationinphytoplanktonandwascontrolledbydistributionofphytoplanktonbetweenSMandSSW.

  • 标签: 富营养化 邻苯二酯二(2-乙己基)酯 表面微层 浮游植物 悬浮颗粒材料 憎水有机化学
  • 简介:Someantitumoractivitiesofcomponent(E),extractedfromtherootofFagopynumCymosum(Trev)Meisn(FCTM),haverecentlybeendiscoveredinvivoandinvitro.ThecomponentE(CE)’spatternofactionwithtumorcellularDNAatthemolecularpharmacologicallevelwasinvestigatedbymacromolecularsynthesisexperiment(MSE)andhumanDNAinteractionsystemestablishedinourlaboratory.Theexperimentsdemonstratedthat,invitro,theagentcouldmarkedlyinhibittheincorporationof3H-TdRintothecellularDNA,andtheIC50inP388leukemiacellandinSGC-7901cellwas17.86μg/mland110.4μg/ml,respectively.Theagent,atmg/mllevel,couldproduceanintercalationreversionpatternwithDNAwithinashorttime(2hours).Butwhentheintervalwasprolongedforover4hours,theactionchangedtointercalationirreversiblepattern.Accordingtotheseobservations,theauthorsinferthatCEinteractswithDNAintwoways-directlyandindirectly.Theindirectaction,especiallyinlowconcentr

  • 标签: concentr DNA INTERCALATION INHIBIT ANTITUMOR PROLONGED
  • 简介:SupersonicMolecularBeamInjection(SMBI)isanewfuellingmethodforTokamaksandhasrecentlybeenimprovedtoenhancethefluxofthebeamandtomakeasurveyoftheclustereffectwithinthebeam.Thereareaseriesofnewphenmnena,whichimplicatetheinteractionofthebeam(includingclusters)withthetoroidalplasmaofHiL-1MTokamak.TheHαsignalsfromtheedgeshowaregularvariationaroundthetorus.Aroundtheinjectionport,theedgeHαsignalsarepositiverectangularwave,whichisconsistentwiththatoftheinjectionbeampulses.Theedgeelectrontemperature,measuredwithmovableLangmuirprobes,decreasesbyanorderofmagnitudeandthedensityincreasesbyanorderofmagnitude.Hαemissionatthebeaminjectionport,measuredwithCCDcameraatanangleof13.4degreestotheSMBIline,showsmanyseparatepeakswithinthecontourplot.Thesepeaksmayshowthestrongemissionproducedbytheinteractionofthehydrogenclusterswiththeplasma.Hydrogenclustersmaybeproducedinthebeamaccordingtotheempiricalscaling(Hagena)lawofclusteringonset,heredisthenozzlediameterinμm,P0thestaguationpressureinmbar,T0thesourcetenperatureinK,andkisaconstantrelatedtothegasspecies.IfΓ*>100,clusterswillbeformed.InpresentexperimentΓ*isabout127.

  • 标签:
  • 简介:用定位系统(LLS)的3D闪电放射来源,三联系闪电排出(二或遵循他们的空间差距是不到10km,他们的时间差距是不到800ms的一条任意的规则的更邻近的闪电分泌物)被观察,并且在联系闪电分泌物之间的相互作用被分析。所有这三联系闪电分泌物被发现包含三或更多控告区域(地面被看作一个特殊费用区域)。而且,至少一个费用区域每一些联系闪电分泌物包含了二闪电分泌物。从电场识别了变化,随后的闪电分泌物被优先的闪电分泌物压制。然而,优先的闪电分泌物提供了一条留下的分泌物隧道便于随后的闪电分泌物,是可能的。第三诉讼提供了这可能性的证据。一起,,结果建议了那费用总体上否定的费用区域能在主要否定费用区域上面用人工的闪电被消费,地面上的闪电事故能极大地被减少,在主要否定费用区域和更低的正电荷区域的费用紧张的高度是合适的条件上。

  • 标签: 闪电放电 相互作用 雷电放电 负电荷 定位系统 时间间隔
  • 简介:Interactionsofpolyvinylpyrrolidone(PVP)withmetalchlorides(MgCl2,CaCl2,KC1andBaC12)havebeeninvestigatedbyviscometricandspectrophotometrictechniquesinaqueoussolutions.Intrinsicviscosity[η]of(PVP)hasshownadiscontinuitywithvaryingconcentrationofmetalchlorides.ThedecreasingorderofeffectivenessofcationisK1+>Ca2+>Mg2+>Ba2+forpoly(vinylpyrrolidone)solution.ChangesintheabsorptionspectraofthecosoluteswereobservedinthepresenceofPVPinthelowerlimitoftheUV-visibleregioni.e.200-210nm.ThesechangeswereattributedtointeractionofPVPmoleculeswiththecosolutemolecules.Astheconcentrationofthecosoluteincreased,aredshiftinthepeakswasobserved,indicatinganincreaseininteractionbetweenPVPandcosolutes.

  • 标签: Polyvinylpyrrolidone PVP METAL chlorides Interaction INTRINSIC
  • 简介:我们学习在在相对地控告的多价的像杆的counterions的一个答案嵌入的二相似控告的表面之间的相互作用。counterions坚硬地由二组成结合的点费用,每原子价Z。有增加表面费用密度或费用的原子价的静电的联合增加的力量。系统被采用一个前後一致的领域理论分析,它在不同近似以内对待counterions的短、长期的相互作用。我们发现在弱联合限制,相互作用仅仅是排斥的。在中间的联合政体,多价的像杆的counterions能调停在表面之间的吸引人的相互作用。为足够地长的杆,衔接贡献吸引人的相互作用。在强壮的联合限制,费用关联能在在控告的表面之间的短分离贡献吸引人的相互作用。二最小然后能出现在在表面之间的力量曲线。

  • 标签: 表面相互作用 纳米颗粒 介导 表面电荷密度 吸引相互作用 引力相互作用
  • 简介:Weinvestigatethequantum-classicaltransitionofakickedrotor(KR)underperturbationbyasecondone.TheinfluenceofsuchachaoticKRmakesdecoherenceofthefirstone,resultingintheemergenceofclassicaldiffusionfromitsquantumdynamics.Suchquantum-classicaltransitionpersistsbydecreasingtheeffectivePlanck'sconstanth,andatthesametime,decreasingthemassofthesecondKRandtheinteractionstrengthproportionally.Inthelimitofh→0,duetovanishingsmallmassandinteraction,thesecondKRhasalmostnoeffectontheclassicaldynamicsofthefirstone.Wedemonstratethisviatwodifferentcouplingpotentials.

  • 标签: 古典 量子动力学 昆腾 普朗克常数 相互作用 消相干