简介:在里面无线多点传送,网络编码最近作为实质的改进吸引了注意到包重发计划。然而,发现最小化重发的最佳的网络代码的问题是难的解决或接近。这份报纸论述二个计划减少重发的数字为可靠高效地多点传送。一个人是用网络基于改进Vandermonde矩阵(VRNC)编码的重发,其它是用网络基于适应改进Vandermonde矩阵(AVRNC)编码的重发。用VRNC计划,发送者都选择包接收装置与改进Vandermonde失去了并且编码他们矩阵;当接收装置收到足够编码的重发包时,所有失去的包能被恢复。与AVRNC计划,发送者能在每重发包,然后改进Vandermonde矩阵发送以后从所有接收装置获得恢复信息能被更新,因此减少编码并且译码的复杂性。我们的建议计划能完成假定重发包的理论更低的界限无损失,并且就重发包损失而言接近理论更低的界限。模拟结果证明建议算法能高效地减少重发的数字,因此改善的传播效率。
简介:NewalgorithmsbasedonartificialneuralnetworkmodelsarepresentedforcubicNURBScurveandsurfaceinterpolation.Whenallthknotspansareidentical,theNURBScurveinterpolationproceduredegeneratesintothatofuniformrationalB-splinecurves.Ifalltheweightsofdatapointsareidentical,thentheNURBScurveinterpolationproceduredegeneratesintotheintegralB-splinecurveinterpolation.
简介:“假日”是个大家喜爱的词儿,因为假日意味着轻松、闲适,还有各种丰富多彩的休闲活动!那么一个频道的精彩假日档节目,也应该倍受欢迎喽!
简介:Theadventofthetimeofbigdataalongwithsocialnetworksmakesthevisualizationandanalysisofnetworksinformationbecomeincreasinglyimportantinmanyfields.Basedontheinformationfromsocialnetworks,theideaofinformationvisualizationanddevelopmentoftoolsarepresented.Popularsocialnetworkmicro-blog(‘Weibo’)ischosentorealizetheprocessofusers’interestandcommunicationsdataanalysis.Userinterestvisualizationmethodsarediscussedandchosenandprogramsaredevelopedtocollectusers’interestanddescribeitbygraph.Thevisualizationresultsmaybeusedtoprovidethecommercialrecommendationorsocialinvestigationapplicationfordecisionmakers.
简介:RegionalinternationalcooperationinseismicdataexchangeandjointseismologicalanalysisintheAsian-Pacificregionsplaysanimportantroleinthereductionofearthquakedisastersintheseregionsaswellasthedevelopmentofglobalseismology.Basedontheup-to-datedevelopmentofnewtechnologyanddigitalbroadbandseismology,wediscussedtheAsianseismologicalCommission(ASC)Proposal"Asian-PacificSeismologicalDataCenter",Weappliedtheconceptofvirtualseismologicalnetwork(OttemoellerandHavskov,1999)totheproposedASCdataexchangeprogram.Basedonthedevelopmentofdigitalseismology,weintroducedaconceptof"modernearthquakecatalogues"whichincludenotonlylocationparametersandmagnitudesasintheconventionalearthquakecataloguesbutalsonewparametersofearthquakessuchasCMT,radiatedenergy,STF,andearthquakeruptureprocess,WerecommendedawebbasedregionalinternationaldataexchangeprogrambetweentheASCmemberswiththepurposeofformingavirtualAsian-Pacificseismologicalnetwork,andtheinterpretationandanalysisofbroadbanddigitalseismicwaveformsconductedatdistributed"datacenters".
简介:ThehydrogeochemicalobservationstationnetworkforearthquakepredictioninChinaisdiscussedindetailinthispaper.Itincludesthefollowing:a)theprocessofstationnetworkestablishmentandtheprincipleofnetworkdeployment;b)thecharacteristicsofhydrogeochemicalobservationpoints’deploymentandtheconditionsandtypesofthesepoints;c)itemsandinstrumentsofseismo-hydrogeochemicalobservation,etc.Inaddition,themonitoringcapacityandpredictionefficiencyofthenetworkarealsodiscussed.
简介:Inthispaper,anartificialneuralnetworkmodelisadoptedtostudytheglasstransitiontemperatureofpolymers.Inourartificialneuralnetworks,theinputnodesarethecharacteristicratioC∞,theaveragemolecularweightM,betweenentanglementpointsandthemolecularweightMmonofrepeatingunit.TheoutputnodeistheglasstransitiontemperatureTg,andthenumberofthehiddenlayeris6.Wefoundthattheartificialneuralnetworksimulationsareaccurateinpredictingtheoutcomeforpolymersforwhichitisnottrained.Themaximumrelativeerrorforpredictingoftheglasstransitiontemperatureis3.47%,andtheoverallaverageerrorisonly2.27%.Artificialneuralnetworksmayprovidesomenewideastoinvestigateotherpropertiesofthepolymers.
简介:Consideringourcountry'spresentsituation,inthispaperweprovidetenevaluationindexesofthecreditapplicationmanagement,whichisusedastheinputvectorofneuralnetwork.Thenwesetupathree-layerbackpropagationmodelforthecreditapplicationevaluationbasedontheartificialneuralnetwork.Wealsoanalyzedthemodelusingtherealdata;thetestingresultindicatesthatthemodelisagoodmethodandagoodtool.
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简介:Theconceptofnetworkcentricwarfare(NCW)anditscharacter,highrequirementofreal-timesynchronizationareintroduced.Thedistributedequal-nodenetworkarchitectureinNCWispresented.Basedontheoreticalanalysisonethemetinterfaceperformance,thispaperpresentsthatforwardinglatencybetweenethemetinterfacedevicesisakeyinfluencefactorofreal-timesynchronizationinNCW.Ethemetfundamentalisbrieflyintroduced.Themodelbetweenaswitchundertest(SUT)andasmartbitscardispresentedandusedfortwointerconnectingswitchesinNCW.Onconditionthatignoringthelatencyofconnectingfiberortwistedpairsandprocessinglatencyofthesmartbitstestsystem,thispaperpresentsthatdockfrequencytolerance(CFT)betweenaSUTandasmartbitscardisaleadinginfluencefactorofforwardinglatencyofanethemetswitch.TheformulaetocalculateinternalforwardinglatencyandforwardinglatencycausedbyitsCFTarededuced.TheoreticalcalculationonforwardinglatencyofanethemetswitchbasedonthegivenCFTandtesttimeisimplemented.ExperimentalstudyonprimaryforwardinglatencyandsecondaryforwardinglatencyisimplementedandforwardinglatencybetweentheSUTandthesmartbitscardismeasured,thustestifyingtheaccuracyoftheabovetheoreticalanalysisthattheCFTisakeyinfluencefactorofforwardinglatency.ThemeasurestosatisfytheneedsofforwardinglatencyinNCWarepresented.
简介:Thenetworkmethodformodelingthermoacousticenginesisdescribed.Somesimulationresultsonacousticfieldsandphasesinengine,especiallyinthethermoacousticstackarepresentedandanalyzed.Theeffectsofsomekeyfactorsonperformanceofstackandenginesystemaresimulatedanddiscussed.Theseeffectfactorsincludethespacesofplatesofstack,thepositionofstackinenginesystem,thesourceparameterofstack,andthemeanworkingpressureoftheenginesystem.
简介:AsortingalgorithmbasedontheBatcher'salgorithmispresented.An8×8multistageinterconnectionnetwork(MIN)isconstructed.Applyingwavelengthdivisionmultiplexing(WDM)technologyandintegratingcontrolmode,thedesignednetworkcanrealizenon-blockingcommunication.ThetimedelayoftheMINandtheswitchesneededarealsoanalyzedintheory,thededucedresultconformsthattheMINdesignedpreviouslyisfeasible.Inthecaseofthesamecommunicationqualityguaranteed,MINusestheleastswitchesandcompletesthecommunicationmoreefficiently.
简介:基于描绘水库岩石鈥檚毛孔结构和液体特征的过滤网络模型,这论文品质上学习micropores的毛孔尺寸,毛孔形状,毛孔连接,和数量的效果在上是w曲线使用数字建模。岩石的电的抵抗力上的形成水咸度的效果被讨论。然后,不同影响因素的相对大小被讨论。不同因素在上的效果是w曲线被恰当的模拟结果分析。结果证明空空格的连接和micropores的数量穿上大效果是w曲线,当另外的因素有小效果时。形成水咸度在绝对抵抗力价值上有大效果。非高射炮现象是流行的,它在有低渗透的岩石中是显著的。关键词岩石抵抗力-浸透代表-网络建模-水库特征这个工程被中国的国家自然科学基础赞助,号码40574030。首先写作博士王克文在石油(东方瓷器)的中国大学的学生,在来自在2002的石油(华东)的大学的申请物理的接待学士度。他的研究兴趣是水库特征和它的应用的小宇宙的模拟。