简介:Thisletterreportsastudyofahybridburstassemblyandahybridburstlossrecoveryscheme(delay-basedburstassemblyandhybridlossrecovery(DBAHLR))whichselectivelyemploysproactiveorreactivelossrecoverytechniquesdependingontheclassificationoftrafficintoshorttermandlongterm,respectively.TrafficpredictionandsegregationofopticalburstswitchingnetworkflowsintothelongtermandshorttermareconductedbasedonpredictedlinkholdingtimesusingthehiddenMarkovmodel(HMM).ThehybridburstassemblyimplementedinDBAHLRusesaconsecutiveaverage-basedburstassemblytohandlejitterreductionnecessaryinreal-timeapplications,withvariationsinburstsizesduetothenon-monotonicnatureoftheaveragedelayhandledbyadditionalburstlengththresholding.ThisdynamichybridapproachbasedonHMMpredictionprovidesoverallalowerblockingprobabilityanddelayandmorethroughputwhencomparedwithforwardsegmentredundancymechanismorpurelyHMMprediction-basedadaptiveburstsizingandwavelengthallocation(HMM-TP).
简介:Thispaperproposesanewdistributedwavelength-routedopticalburstswitching(WR-OBS)networkarchitectureandtwocorrespondingcontrolprotocols.Bytakingadvantageofmeritsfrombothjustenoughtime(JET)protocolandtwo-waysignalingmethod,thisnewcontrolarchitectureoutperformstraditionalJETOBSnetworkinpointsofburstlossprobability,systemthroughputandcentralizedWROBSnetworkinnetworkscalabilityconfirmedbycomputersimulations.Furthersimulationisdevelopedtocomparetheperformanceofthetwocontrolprotocols,whichleadstoinstructivediscussioninrealWR-OBSnetworkdesign.
简介:Comparedtotowedstreamers,ocean-bottomseismometers(OBS)obtainbothS-wavedataandricherwavefieldinformation.Inthispaper,theinducedpolarizationmethodisusedtoconductwavefieldseparationonOBSdataobtainedfromtheShenhuareaintheSouthChinaSea.AcomparisonofthechangesinP-andS-waves,andacomprehensiveanalysisofgeologicalfactorswithinthearea,enableanalysisanddescriptionoftheoccurrenceofnaturalgashydrateinthestudyarea.ResultsshowanincreaseinP-wavevelocitywhennaturalgashydrateexistsintheformation,whereastheS-wavevelocityremainsalmostconstant,asS-wavescanonlypropagatethroughtherockskeleton.Therefore,thebottom-simulatingreflection(BSR)responseoftheP-waveisbetterthanthatoftheS-waveinthefrequencyanalysisprofile.Inawide-anglesection,therefractivewaveofthehydratelayerisevidentwhenusingP-wavecomponentsbutidentificationisdifficultwithS-wavecomponents.ThisvelocitymodelillustratesthesensitivityofPandS-wavecomponentstogashydrate.TheuseofthispolarizationmethodandresultsofanalysisprovidetechnicalandtheoreticalsupportforresearchonhydratedepositsandothergeologicalfeaturesintheShenhuarea.
简介:根据Ecker的水合物沉积物的三种微观模式,计算含水合物沉积层和含游离气沉积物的弹性模量,分析对比了水合物的不同微观模式、不同水合物饱和度以及不同游离气饱和度对沉积物弹性模量的影响;从纵横波分离的弹性波动方程出发,采用交错网格空间有限差分方法模拟地震波在海底天然气水合物沉积地层的传播,得到纵、横波的海底地震(OBS)共接收点道集。数值算例表明,当水合物作为流体的一部分或胶结颗粒骨架时,仅纵波记录上存在BSR;当水合物胶结颗粒接触,纵、横波记录上均存在BSR。并且,OBS会接收到上行纵波和上行横波在海底界面形成的转换波,干扰横波记录上BSR的识别。
简介:摘要:OBS(Open Broadcaster Software)Studio是一款功能丰富、开源的视频录制和直播推流软件,能同时支持微信视频号、微博、B站、快手号等多个主流平台的推流直播。在公立医院构建多路直播场景应用中,可以实现高效低成本的多平台同步直播。本文以重庆大学附属肿瘤医院基于OBS的多渠道分发直播的构建与应用为例,深入研究并探索基于OBS Studio的多渠道分发直播在公立医院科普工作中的应用模式和问题挑战,旨在为公立医院的科普直播工作提供新思路和方法,并进一步促进公众健康素养的提高。