A toolset to develop new cache coherency protocols.docx
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A toolset to develop new cache coherency protocols.docx
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Atoolsettodevelopnewcachecoherencyprotocols
DevelopmentofaLowCostDataAcquisitionSystemforMilkPowderProductionLineMonitoring OriginalResearchArticle
JournalofDairyScience
Oneofthemainbottleneckswhendesigninganetworksystemisveryoftenitsmemorysubsystem.Thisismainlyduetotheextremelyhighspeedofthestate-of-the-artnetworklinksandtothefactthatinordertosupportadvancedQualityofService(QoS),alargenumberofindependentqueuesisdesirable.Inthispaperwedescribethearchitectureandperformanceofamemorymanager,theQMSthatistailoredtoFPGAtechnologyandcanprovideupto6.2 Gbpsofaggregatethroughput,whilehandling32Kindependentqueues.Thepresentedsystemsupportsacompleteinstructionsetandthuswebelieveitcanbeusedasahardwarecomponentinanysuitablenetworkingsystem.Italsosupportsalargenumberofdifferentinterfaces,anditisdesignedinaveryscalableway.TheQMSusesadoubledatarateDRAMfordatastorageandatypicalSRAMforkeepingdatastructures-pointers,thereforeminimizingthesystem'scost.InordertodealwiththeproblemsofrefreshingandbankconflictsintheDRAM,severaloptimizationtechniqueshavebeenemployed.Inthispaperwealsopresentthearchitectureofanetwork-processingdevicethatfullyutilizestheadvancedfeatureoftheQMS.TheQMSconsistsof8500SlicesinaXILINXFPGAandworksat125MHz.
ArticleOutline
1.Introduction
2.Networkingdevicearchitecture
3.Thequeuemanagementsystem(QMS)
3.1.Memorytechnology
3.2.Datastructuresandqueueorganization
3.3.QMSorganization
3.4.Supportedoperations
3.5.Optimizationtechniques
3.5.1.Freelistorganization
3.5.2.Memoryaccessreordering
3.5.3.Memoryaccessarbitration
3.5.4.Internalbackpressure
4.Implementationandperformanceevaluation4.1.QMS-CPUinterface
4.1.1.Polling-drivencommunication
4.1.2.Communicationprotocol
4.1.3.Interface'sperformance
4.2.PLBandDCRinterfaces
4.3.Networkinterfaces
4.4.QMSresilience
4.5.Systemperformance
4.6.Experimentresults
4.7.PerformanceComparison
4.8.HardwareImplementation
5.Conclusions
References
Anapproachtooptimisethecriticalsensorlocationsinone-dimensionalnoveldistributivetactilesurfacetomaximiseperformance OriginalResearchArticle
SensorsandActuatorsA:
Physical
Objectives
TodevelopanddescribeNEST(networkenhancedsurgicaltraining),anaffordableandeasilyreproducibletelementoringsystem.
Studydesign
Wehavedevelopedthesystemaroundtwostandardpersonalcomputers:
adesktopcomputerforthesurgeonintheoperatingroom(OR),equippedwithadigitalvideo-capturesystem;andalaptopcomputerforamentoroutsidetheOR.Inanattempttoreducethecosts,freewaresoftwarehasbeentestedandchosentoallowvisualandaudiointeractionbetweenthetwocomputers.NoITtechnicianswereinvolvedintheprocessatanystage.
Results
Following6monthsofhardwareandsoftwaretesting,wehavesuccessfullydevelopedNEST(networkenhancedsurgicaltraining),anaffordabletelementoringsystembasedontwostandardpersonalcomputersconnectedthroughanEthernetcable.WetriedNESTduringthewholerangeofgynaecologicinterventionsperformedinourunit,includingabdominal,vaginalandlaparoscopicsurgery.WealsosuccessfullyusedNESTtoprovidevisualaccesstotheoperativefieldtomedicalstudentsandendoscopyworkshopdelegates.Inaddition,wealsousedNESTtosimulatetelementoringduringpelvi-trainersessionsinourendoscopyskillslaboratory.Surgeons’interactionthroughNESTseemsreliablesincethementor'sinstructions,bothvocalandvisual(bypointingatlandmarks),werealwaysfollowedontimebythesurgeonduringourtests.
Conclusions
WebelievethatsurgicaltelementoringdeservesattentionandourNESTsystemcouldbeanidealtoolforstudiesontelementoringinsafeenvironments.Initssimplestincarnationwiththementor“next-door”,justoutsidetheoperatingtheatre,he/shecouldinterveneatanystageifnecessary.Moreover,NESTisaffordableandreproducibleasitisbasedsolelyontwostandardpersonalcomputers,avideo-capturesystem,anEthernetcable,andtwofreewarecomputerprograms.
ArticleOutline
1.Introduction
2.Materialsandmethods
2.1.Hardware
2.2.Videointeraction
2.3.Audiointeraction
3.Results
4.Comment
References
Accuracyandefficiencycomparisonsofsingle-andmulti-cycledsoftwareclassificationmodels OriginalResearchArticle
InformationandSoftwareTechnology
Service-OrientedEnterpriseNetworkPerformanceAnalysis OriginalResearchArticle
TsinghuaScience&Technology
Architectureofamultimediacommunicationsystemfortechnicaldocumentationinamodernfactory OriginalResearchArticle
ComputersinIndustry
MobileGrid,isafullinheritoroftheGridwiththeadditionalfeaturethatitsupportsmobileusersandresources.SecurityisanimportantaspectinGridbasedsystems,anditismorecomplextoensurethisinamobileplatformowingtothelimitationsofresourcesinthesedevices.AGridinfrastructurethatsupportstheparticipationofmobilenodesandincorporatessecurityaspectswillthusplayasignificantroleinthedevelopmentofGridcomputing.Theideaofdevelopingsoftwarethroughsystematicdevelopmentprocessestoimprovesoftwarequalityisnotnew.However,manyinformationsystemssuchasthoseofGridComputingarestillnotdevelopedthroughmethodologieswhichhavebeenadaptedtotheirmostdifferentiatingfeatures.Thelackofadequatedevelopmentmethodsforthiskindofsystemsinwhichsecurityistakenintoaccounthasencouragedustobuildamethodologytodevelopthem,offeringadetailedguidefortheiranalysis,designandimplementation.ItisimportanttousesoftwareV&Vtechniques,accordingtoIEEEStd.1012forSoftwareVerificationandValidation,toensurethatasoftwaresystemmeetstheoperationalneedsoftheuser.Thisensuresthattherequirementsforthesystemarecorrect,complete,andconsistent,andthatthelife-cycleproductscorrectlydesignandimplementsystemrequirements.ThispapershowspartofadevelopmentprocessthatweareelaboratingfortheconstructionofinformationsystemsbasedonGridComputing,whicharehighlydependentonmobiledevicesinwhichsecurityplaysahighlyimportantrole.Inthedesignactivityoftheprocess,wedesignasecurityarchitecturewhichservesasareferenceforanymobileGridapplicationthatwewishtobuildsincethissecurityarchitecturedefinesacompletesetofsecurityserviceswhichwillbeinstantiateddependingontherequirementsandfeaturesfoundinpreviousactivitiesoftheprocess.AV&Vtaskisalsodefinedinthedesignactivitytovalidateandverifyboththearchitecturebuiltandthetraceabilityoftheartifactsgeneratedinthisactivity.Inthispaper,wewillpresenttheservice-orientedsecurityarchitectureforMobileGridSystemswhichconsidersallpossiblesecurityservicesthatmayberequiredforanymobileGridapplication.
ArticleOutline
1.Introduction
2.Relatedwork
3.Overview
4.Securityarchitecture
4.1.Authenticationservice
4.1.1.AuthenticationInterface
4.1.2.Relationshipswithotherservices
4.2.Authorizationservice
4.2.1.Authorizationinterfaces
4.2.1.1.PIPinterface
4.2.1.2.PDPinterface
4.2.2.Relationshipswithotherservices
4.3.Confidentialityservice
4.3.1.Confidentialityinterface
4.3.2.Relationshipswithotherservices
4.4.Integrityservice
4.4.1.Integrityinterface
4.4.2.Relationshipswithotherservices
4.5.Non-repudiationservice
4.5.1.Non-repudiationinterface
4.5.2.Relationshipswithotherservices
4.6.Delegationservice
4.6.1.Delegationinterface
4.6.2.Relationshipswithotherservices
4.7.Anonymityservice
4.7.1.Anonymityinterface
4.7.2.Relationshipswithotherservices
4.8.Trustmanagementservice
4.8.1.Trustmanagementinterface
4.8.2.Relationshipswithotherservices
4.9.Privacyservice
4.9.1.Privacyinterface
4.9.2.Relationshipswithotherservices
4.10.CredentialManagementService(CMS)
4.10.1.Credentialmanagementinterface
4.10.2.Relationshipswithotherservices
4.11.Identitymanagementservice
4.11.1.Identitymanagementinterface
4.11.2.Relationshipswithotherservices
4.12.MobilePolicyService
4.12.1.Mobilepolicyinterface
4.12.2.Relationshipswithotherservices
4.13.Auditservice
4.13.1.Auditinterface
4.13.2.Relationshipswithotherservices
4.14.GridSecurityPolicyService
4.14.1.Gridsecuritypolicyinterface
4.14.2.Relationshipswithotherservices
5.Applicabilityofthereferencesecurityarchitecture
6.Conclusions
Acknowledgements
References
Vitae
JADAMILU:
asoftwarecodeforcomputingselectedeigenvaluesoflargesparsesymmetricmatrices OriginalResearchArticle
ComputerPhysicsCommunications
Thenetworkconvergenceofwired,wireless,andmobilesystemscreatesaubiquitousnetworkenvironmentwheremodernnetworkingdevicesfeaturemultiplenetworkinginterfacesandcanconnecttodifferentnetworkssimultaneously.Mobileusersinubiquitousnetworksexpecttoaccessinformationservicesanytime,andfromanywhere.Thispaperpresentsamobilecontentsharingscenarioinwhichanetworkeddevicecandiscoverneighboringdevicesandsharemultimediacontentinaconvenient,networkedmanner.Thisidealscenariodiffersfromthetraditionalusagewhichrequiresthetediousmanualoperationsofconnectionsetupandfiletransfer.Toachievethisgoal,thisstudyproposesauser-providedmultimediacontentdistributionarchitectureforamobileandubiquitousnetworkenvironment.Theproposedarchitectureintegratesseveralspecificmechanisms,incl
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