简介:Thispaperaddressesthehighdimensionsampleproblemindiscriminateanalysisundernonparametricandsupervisedassumptions.SincethereisakindofequivalencebetweentheprobabilisticdependencemeasureandtheBayesclassificationerrorprobability,weproposetouseaniterativealgorithmtooptimizethedimensionreductionforclassificationwithaprobabilisticapproachtoachievetheBayesclassifier.TheestimatedprobabilitiesofdifferenterrorsencounteredalongthedifferentphasesofthesystemarerealizedbytheKernelestimatewhichisadjustedinameansofthesmoothingparameter.Experimentresultssuggestthattheproposedapproachperformswell.
简介:Thisarticleisfocusedonanalyzingthekeytechnologiesofnewmaliciouscodeandcorrespondingdefensivemeasuresinthelarge-scalecommunicationnetworks.Basedondescriptionoftheconceptsanddevelopmentofthemaliciouscode,thearticleintroducestheanti-analysistechnology,splittingandinsertingtechnology,hidingtechnology,polymorphvirustechnology,andautoproductiontechnologyofthemaliciouscodetrendswithintelligence,diversityandintegration.Followingthat,itsummarizesthesecurityvulnerabilitiesofcommunicationnetworksfromfourrelatedlayersaspects,accordingtothemechanismsofmaliciouscodeinthecommunicationnetworks.Finally,itproposesrapidresponsedispositionofmaliciouscodeattacksfromfourcorrelatedsteps:buildingupthenetworknodemonitoringsystem,suspiciouscodefeatureautomationanalysisandextraction,rapidactivemaliciouscoderesponsetechniqueforunknownmaliciouscode,andmaliciouscodeattackimmunitytechnique.Asaresult,itactivelydefensesagainsttheunknownmaliciouscodeattacksandenhancesthesecurityperformanceofcommunicationnetworks.
简介:Acompactammoniagassensorwithtwogaschambersisproposedinthispaper,whosecoresensingdeviceisaU-bendingmicroringresonator.Thewaveguidesofringpartandfeedbackpartinthisresonatoraremadeofsilicononinsulator(SOI)ridgewaveguidecoveredwithZnOnanocrystalswhicharesensitivetoammoniagas.Thesensorcanmeasuretwogroupsofgassamplessimultaneously.Bycomputersimulation,weobtaintheclearsensitivitycurvesoftwogaschambersinammoniasensorwhenthegasconcentrationincreasesfrom0to4‰.Thegasconcentrationsintwochamberscanbeobtainedfromoneoutputspectrum,whichsignificantlyreducesthematerialandtimeconsumption.
简介:未预见到的活动数据爆炸象一样光谱资源姿势少见对今天的性能的主要挑战在新奇解决方案的迫切需要处理如此的多卷的活动数据的细胞的网络。长期进化放纵(LTE-U),它扩大给没有执照的乐队动手术的LTE标准,被建议了改进系统产量。在LTE-U系统,到达用户们将与无线忠实(WiFi)竞争放纵的光谱资源播送数据信息的用户。不过,至于用为LTE用户的没有执照的乐队的传播的好处没有清楚的一致。到这个目的,在这份报纸,一个分析模型基于一个队列系统被介绍理解考虑服务(QoS)和LTE-U用户行为的质量的放纵的基于的LTE系统完成的性能。获得队列系统的替代状态答案,一个矩阵几何方法被用来解决它。然后,为LTE-U用户的没有执照的乐队的平均延期和利用被使用排队模型导出。LTE-U共存的表演用建议模型与WiFi被评估并且在实践至于LTE-U的优点提供一些起始的卓见。