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简介：Theresources-orientedindustryclusterisgeographicallyclosetonaturalresourcesdevelopmentandprocessingindustry.Theknowledge-intensive,technology-intensive,capital-intensive,andlabor-intensiveisarelativelyaggregateassociatedwithnaturalresourcesandwillstructurecommonalityandcomplementarycouplingsothateconomicandsocialdevelopmentplayaleadingroleinthecomplexadaptivesystemscloselyrelatedtoecologicalenvironment.Aresources-orientedindustryclusterinYunnanhasgeneralcommoncharacteristicsofindustrialclustersandwillformthecharacteristicsoftheenterprisespatialaggregationofinnovativenetworkoftheindustrialchainandvaluechain.AccordingtothemarketstructureofresourcesandresourcesmarketbehaviorinYunnan,theparticularityofresourcescommodityproductionhasconducedresourcesmarketstructureandgeneralmerchandisemarketstructuremanydifferences.Optimizingtheclusterstructureandextendingtheindustrialchainhaveimprovedtheproductivityoftheclusterandextensionthelifecycleoftheclustertoachievesustainabledevelopment.

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简介：Orthogonalfrequencydivisionmultipleaccess(OFDMA)isapopularandwidelyacceptedmultipleaccesstechniquetoprovidehighdatarateservicesinamobileenvironmentintheareaofwirelesscommunications.OFDMAcanprovidebetterflexibilityinallocatingtheradiospectrabyutilizingsubcarrierallocations,scheduling,andenergycontroltoobtainmulti-dimensiondiversitygains.Duetoitsresourceallocationflexibility,OFDMAhasbeenwidelyusedasagreenairinterfacetechnologyfortheemergingbroadbandwirelessaccessnetworks.ThispaperextensivelyaddressestheintegrationofgreenOFDMAtothefutureairinterfacetechnologies,forinstance:two-tiercellular,multiradioaccesstechnologies(RATs),FemtoCell,andrelaynetworks.ThemainfocusofthepaperistoreviewandanalyzethecurrentOFDMAtechniquestoaddressthegreenresourceallocationinmultiuserdiversity,wherethecriticalconstraintsarethecomputationalcomplexity,energyefficiency,andthesub-channelassignment.ThefuturetrendofOFDMAbasednetworkswillaimtomaximizetheenergyefficiencyoftheexclusivechannelassignmentthroughajointsub-channelandpowerallocationtoaccommodatehighdatatrafficnetworksspeciallytherelaybased5Gcellularnetworks.

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简介：Aninformationhidingalgorithmisproposed,whichhidesinformationbyembeddingsecretdataintothepaletteofbitmapresourcesofportableexecutable(PE)files.Thisalgorithmhashighersecuritythansometraditionalonesbecauseofintegratingsecretdataandbitmapresourcestogether.ThroughanalyzingtheprincipleofbitmapresourcesparsinginanoperatingsystemandthelayerofresourcedatainPEfiles,asafeandusefulsolutionispresentedtosolvetwoproblemsthatbitmapresourcesareincorrectlyanalyzedandotherresourcesdataareconfusedintheprocessofdataembedding.Thefeasibilityandeffectivenessoftheproposedalgorithmareconfirmedthroughcomputerexperiments.

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简介：Inordertominimizethetransmittedpowerinthemulti-userorthogonalfrequencydivisionmultiplexing(OFDM)system,aschemecombiningtheimprovedparticleswarmoptimization(POS)algorithmwithgeneticalgorithm(GA)isproposedtooptimizethesub-carriersandbitsallocation.Inthealgorithm,arandomvelocitybetweenthemaximumandminimumparticlevelocityisusedastheupdatingvelocityinsteadofmaximumorminimumvelocitywhentheupdatedparticlevelocityishigherthanthemaximumparticlevelocityorlowerthantheminimumparticlevelocity.Then,theconvergencepopulationisusedastheinitialpopulationofthegeneticalgorithmtooptimizethesubcarriersandbitsallocationfurther.Simulationresultsshowthatthetransmittedpoweroftheproposedalgorithmisabout2dBto10dBlowerthanthatofthegeneticalgorithm,particleswarmoptimizationalgorithm,andZhang’salgorithm.

简介：CognitiveRadio(CR)systembasedonOrthogonalFrequencyDivisionMultipleAccess(OFDMA),suchasWirelessRegionalAreaNetworks(WRAN)andWorldwideInteroperabilityforMicrowaveAccess(WiMAX),oftenattempttoimproveperformanceviadynamicradioresourcemanagement,whichischaracterizedasconcurrentprocessingofdifferenttrafficandnondeterministicsystemcapacity.Itisessentialtodesignandevaluatesuchcomplexsystemusingpropermodelingandanalysistools.Inthepreviouswork,mostofthecommunicationsystemsweremodeledasMarkovChain(MC)andStochasticPetriNets(SPN),whichhavetheexplicitlimitationinevaluatingadaptiveOFDMACRsystemwithwideareatraffic.Inthispaper,wedevelopanexecutabletop-downhier-archicalColoredPetriNet(CPN)modelforadaptiveOFDMACRsystem,andanalyzeitsperformanceusingCPNtools.TheresultsdemonstratethattheCPNcanmodeldifferentradioresourcemanage-mentalgorithmsinCRSystems,andtheCPNtoolsrequirelesscomputationaleffortthanMarkovmodelusingMatlab,withitsflexibilityandadaptabilitytothetrafficswhicharrivalintervalandprocessingtimearenotexponentiallydistributed.

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简介：Thispaperstudiestheproblemofeffectiveresourceallocationformulti-radioaccesstechnologies(Multi-RAT)nodesinheterogeneouscognitivewirelessnetworks(HCWNs).End-to-endutility,whichisdefinedasthedelayofend-to-endcommunication,istakenintoaccountinthispaper.InthescenarioofHCWNs,itisassumedthatthecognitiveradionodeshavetheabilityofMulti-RATandcancommunicatewitheachotherthroughdifferentpathssimultaneouslybysplittingthearrivalpackets.Inthispaper,theproblemisformulatedastheoptimizationofsplitratioandpowerallocationofthesourcecognitiveradionodetominimizethedelayofend-to-endcommunication,andalowcomplexitystep-by-stepiterativealgorithmisproposed.Numericalresultsshowgoodperformanceoftheproposedalgorithmovertwootherconventionalalgorithms.

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简介：事件以后的反应规划者必须在一扇批评时间窗户以内为资源的合适的分配和分发开发有效、有效的计划到影响区域(IA)。为了决定分发的有效性和效率，计划，这研究探讨资源分配有效性损失(在供应和需求之间的失配在IA引起的RAEL，或损失)，紧急情况后勤时间花费(在紧急情况条件下面的后勤过程的ELTC，或交通时间)。而且，这研究检验分享在不同阶段之中协调资源的特性(FSC)的后续。这研究基于这个人物建议一个综合模型(IM)。这个模型试图最小化RAEL和ELTC。而且，IM联合时间尺寸模型(TDM)，它在计划地平线，和空间尺寸模型(SDM)协调所有阶段的要求和供应，它为第一个阶段产生一个特定的分发计划。一个分析解决方案作为每FSC，SDM通过一个单个目的的线性编程模型在以后被解决的定义为TDM被获得。在有效地解决IM以后，我们发现建议方法论适合紧急情况情形很好。从模型导出的卓见也在结论被介绍。）

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