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International Conference Publications

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Research on Market Operating Mechanism Nowadays, the digital and networked information environment has brought great convenience to people’s lives. It is the extensive use of information technology and the rapid development of Internet that has accelerated the global informatization. Thus,… Continue Reading…

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Evaluation of QoE of WebServices ThispaperstudiesamethodofassessingQoEofWebservicesonamobilehostoverawirelessLAN.ToperformQoEassessment,theauthorsutilizetheirintegratedsimulator/emulatorsystem.ThisexperimentassumessixscenarioswherepedestriansassessWebserviceswhilemoving.TheauthorstreatashoppingserviceandaWikiserviceastargetWebservicesandconsiderWebusabilityasQoE.TheexperimentalresultsdonotconfirmthatdegradationofQoEdependsonthatofQoS.Consequently,itisinevitabletoassessactualQoEandtheintegratedsimulator/emulatorsystemiseffectiveinperformingsuchassessment https://arudhrainnovations.com/ Currently,becauseofthepenetrationofwirelessdevices,opportunitytouseaWebserviceoverawirelessLANhasbeenincreasing.Consequently,wecanoftenutilizesomeWebserviceswhilemovingonfoot,bycar,orbytrain.ThismeansthatweshouldevaluateaWebservicetreatingaWebclientasamobilehost.Ascomparedwithcommunicationonastationaryhost,thequalityofcommunicationonamobilehostcanbeeasilydegradedbecauseoffading,waveinterferenceandsoon.Therefore,quantitativeevaluationofthequalityofaWebserviceonamobilehostisrequired.Especiallyitshouldbedoneinuserviewpointconsideringthatauserfinallydecidesthequality.Notethatthequalityofservice(QoS)inuser’sviewpointisoftenreferredtoasqualityofexperience(QoE).Thus,thispaperalsoadoptstheseterms.ToevaluateQoEofaWebservice,itisnecessaryforactualuserstoutilizetheWebserviceoveranactualnetworkandevaluateitwithsomesubjectivemethods.Inordertodothis,anexperimentermustprepareactualexperimentaldevices,suchasanaccesspoint(AP),somestations(STAs),andsoon.Moreover,iftheexperimenterassumesaWebclienttobeamobilehost,theusers(experimentalsubjects)mustusetheWebservicewhilemovingformanytimes.Thisimposesaheavyburdenontheusersandmakeslowreproducibilityoftheexperiment. https://arudhrainnovations.com/ Insteadofpreparingactualexperimentalenvironments,wecanconsiderusinganetworksimulatortoevaluateQoSofaWebserviceonamobilehost.However,sincethenetworksimulationisclosedwithinacomputer,usershardlyperformsubjectiveevaluationforsimulatedresults.Therefore,evalua-tionwithnetworksimulatorisnotalwayssuitablefortheQoEassessmentOntheotherhand,byusinganetworkemulator,itiseasytoconstructexperimentalenvironmentwhichcanmakesubjectsassess.Inthispaper,thenetworkemulatormeansadevicewhichcanemulateaWAN/LANline,e.g.Tcpdump[1].Indeed,subjectscanassessQoEforanactualWebserviceinsuchanexperimentalenvironmentwithanemulator,butitisdifficultforalmostnetworkemulatorstoemulatecomplexcharacteristicsofawirelessLAN,suchasradiointerference,fading,mobilityofhostsandsoon.Thatis,anexperimentwithanemulatorisnotexactlyadequateforQoEassessmentofaWebserviceonamobilehost. Webclient.TheWebserverisconnectedtotheWebclientviatheintegratedsimulator/emulatorsystem,whichperformssimulationaccordingtothescenariosdescribedinthenextsubsection.TablesI,IIandIIIshowthespecificationsoftheWebclient,theintegratedsimulator/emulatorsystemandtheWebserver,respectively.ThispaperadoptsashoppingserviceandaWikiserviceastargetWebservices.TheshoppingserviceisaWebservicewhichincludesalotofHTMLfilesandimages,andWikiserviceconsistsonlyHTMLfiles.Astasks,thesubjectssearchsomeproductsdesignedbytheexperimentsfortheshoppingservice,andfindanswersofagivenquestionfortheWikiservice.Wesettasksthatsubjectschooseitemsspecifiedinshoppingservice,andlookforanswersofgivenquestioninWikiservice.Thesubjectsaremenaround20yearsold,andthenumberofthemis12 Inthisstudy,weperformedQoEassessmentundertheenvironmentsassumingthepedestrianusingtheintegratedevaluationsystemusingthesimulatorandtheemulator,andevaluateWebusability.Fromthisresult,wefoundthatWebusabilityisnotdegradedexpectforsomeenvironmentsinthiscase.ThisindicatesthatQoEevaluationwiththesimu-lator/emulatorsystemisadequate.Asourfuturework,itwasintendedforscenariosthatareintendedtobepedestrianthistime,butweconsiderascenariothatassumesmovementsuchascarortrain,andexperimentsinotherWebservices. SEO Company Arudhra Innovations

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An Integrated Web Service Framework for Mobile Device With the development of computer manufacture technology, communication and network, computer technology has been in the era of Pervasive Computing [1-7]. We can see that one of the unique characteristic of the… Continue Reading…