简介:Thepaperexplorestheprospectofintroducinglanguage,perception,cultureandcommunication.Startingwithsomedefinitionsoflanguage,perception,cultureandcommunication,thepaperarguesfortheinternalconnectionamongthem.Itprovidesbetterunderstandingofthesefactorsinforeignlanguagelearningandencourageslearnerstoachievethebetterlearningresulttocommunicateeffectivelythroughlanguage,cultureetc.
简介:ThisessayistalkaboutThesignificanceofcross-culturecommunicationinglobalmodernsociety.Itwillexpoundthenecessityofcross-culturalcommunicationfortheglobalmodernsociety,whichincludesexplainhowthecross-culturecommunicationworksintheglobalmodernsociety.
简介:Inthispaper,anenergyefficientbandwidthallocationschemeisproposedforwirelesscommunicationsystems.Anoptimalbandwidthexpansion(OBE)schemeisproposedtoassigntheavailablesystembandwidthforusers.Whenthesystembandwidthdoesnotreachthefullload,theremainingbandwidthcanbeenergy-efficientlyassignedtotheotherusers.SimulationresultsshowthattheenergyefficiencyoftheproposedOBEschemeoutperformsthetraditionalsamebandwidthexpansion(SBE)scheme.Thus,theproposedOBEcaneffectivelyassignthesystembandwidthandimproveenergyefficiency.
简介:(VNE)虚拟网络嵌入是网络虚拟化的必要部分,它为未来网络被看作最有希望的方法之一。它的主要对象是高效地分配一个虚拟网络(VN)的节点和到一个分享的底层网络(SN)的连接。NP难、退出的研究提出了几个启发式的算法。然而,大多数算法仅仅考虑节点的本地资源,例如中央处理器和带宽(BW),到决定嵌入,并且忽略网络属性的重要影响。基于全部网络的属性,在每个节点之间的连接的一个模型被提出测量节点,和一个新二阶段的嵌入算法评价的资源被建议。此后,印射的节点和印射的连接能联合被考虑。当减少运行时刻时,广泛的模拟证明建议算法由增加VN请求的收入/费用比率和接受比率改进VNE的性能。
简介:Frictiondragprimarilydeterminesthetotaldragoftransportsystems.ApromisingapproachtoreducedragathighReynoldsnumbers(>104)areactivetransversalsurfacewavesincombinationwithpassivemethodslikearibletsurface.Fortheapplicationintransportationsystemswithlargesurfacessuchasairplanes,shipsortrains,alargescaledistributedreal-timeactuatorandsensornetworkisrequired.Thisnetworkisresponsibleforprovidingconnectionsbetweenaglobalflowcontrolanddistributedactuatorsandsensors.ForthedevelopmentofthisnetworkweestablishedatfirstasmallscalenetworkmodelbasedonSimulinkandTrueTime.TodeterminetimescalesfornetworkeventsondifferentpackagesizeswesetupaRaspberryPibasedtestbedasaphysicalrepresentationofourfirstmodel.Thesetimescalesarereducedtotimedifferencesbetweenthedeterministicnetworkeventstoverifythebehaviorofourmodel.Experimentalresultswereimprovedbysynchronizingthetestbedwithsufficientprecision.Withthisapproachweassurealinkbetweenthelargescalemodelandthelaterconstructedmicrocontrollerbasedreal-timeactuatorandsensornetworkfordistributedactiveturbulentflowcontrol.
简介:Inunderwateropticalwirelesscommunication(UOWC),achannelischaracterizedbyabundantscattering/absorptioneffectsandopticalturbulence.MostpreviousstudiesonUOWChavebeenlimitedtoscattering/absorptioneffects.However,experimentsintheliteratureindicatethatunderwateropticalturbulence(UOT)cancauseseveredegradationofUOWCperformance.Inthispaper,wecharacterizeanUOWCchannelwithbothscattering/absorptionandUOTtakenintoconsideration,andaspatialdiversityreceiverscheme,sayasingleinput–multiple-output(SIMO)scheme,basedonalight-emitting-diode(LED)sourceandmultipledetectorsisproposedtomitigatedeepfading.TheMonteCarlobasedstatisticalsimulationmethodisintroducedtoevaluatethebit-error-rateperformanceofthesystem.Itisshownthatspatialdiversitycaneffectivelyreducechannelfadingandremarkablyextendcommunicationrange.
简介:Inthisstudy,therelationshipbetweenmothers'self-efficacyperceptionandtheircommunicationwiththeirchildrenhasbeenanalyzed.Ninety-fourmothershavingchildreninpreschoolperiodconstitutethesampleofthestudy.RelationalsurveymodelhasbeenusedandBerkeleyParentingSelf-EfficacyScalePreschoolVersion(BPSE-PV)andChild-ParentRelationshipScale(CPRS)havebeenusedasdatacollectiontools.Accordingtotheresultsoftheresearch,ithasbeenfoundthatthereisasignificantpositiverelationshipbetweenmothers'maternalstrategies,familyinvestmentsinchildren'spotential,totalself-efficacyperception,andbeingabletohaveacloserelationshipwiththeirchildren.Ithasbeenalsodeterminedthatthereisasignificantnegativerelationshipbetweenmothers'maternalstrategies,theirtotalself-efficacyperception,andmothers'conflictwiththeirchildren.Ithasbeenconcludedthatmothers'self-efficacylevelshavesignificantlypredictedtheirrelationshipstatuswiththeirchildrenbothinIntimacyandConflictsub-dimensions.
简介:在基于竞争的卫星通讯系统,在数据包之间的碰撞可以由于随机包送发生。在每传播前的合适的延期能减少数据碰撞率。作为古典随机的多重存取协议,slotted阿罗哈(S阿罗哈)通过时间槽分配和同步措施减少数据碰撞率。为了改进卫星的稳定性和产量,联网,一个backoff算法将基于S阿罗哈是有效的。一个新适应backoff算法基于用灰系统的S阿罗哈被建议,它根据网络条件适应地计算backoff时间。并且网络条件被每个用户终端在灰系统用模型美国通用汽车公司(1,1)根据隧道存取成功比率的预言估计。建议算法与象二进制指数的backoff(BEB)和多重增加那样的另外的已知的计划相比多重减少(MIMD)backoff。建议算法的表演被模仿并且分析。系统的产量基于BEB和MIMDbackoff基于建议算法比系统好,这被显示出。并且也有与使用BEB相比的延期表演的一些改进。建议算法为在卫星网络的用户终端的大数字是特别有效的。