control and data acquisition software for the gammaray spectroscopy ATCA subsystems of the JETEP2.docx

control and data acquisition software for the gammaray spectroscopy ATCA subsystems of the JETEP2.docx

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controlanddataacquisitionsoftwareforthegammarayspectroscopyATCAsubsystemsoftheJETEP2

257

MediumAccessControlprotocolsforadhocwirelessnetworks:

Asurvey  OriginalResearchArticle

AdHocNetworks,Volume4,Issue3,May2006,Pages326-358

SunilKumar,VineetS.Raghavan,JingDeng

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Abstract

Studiesofadhocwirelessnetworksarearelativelynewfieldgainingmorepopularityforvariousnewapplications.Inthesenetworks,theMediumAccessControl（MAC）protocolsareresponsibleforcoordinatingtheaccessfromactivenodes.Theseprotocolsareofsignificantimportancesincethewirelesscommunicationchannelisinherentlypronetoerrorsanduniqueproblemssuchasthehidden-terminalproblem,theexposed-terminalproblem,andsignalfadingeffects.AlthoughalotofresearchhasbeenconductedonMACprotocols,thevariousissuesinvolvedhavemostlybeenpresentedinisolationofeachother.Wethereforemakeanattempttopresentacomprehensivesurveyofmajorschemes,integratingvariousrelatedissuesandchallengeswithaviewtoprovidingabig-pictureoutlooktothisvastarea.WepresentaclassificationofMACprotocolsandtheirbriefdescription,basedontheiroperatingprinciplesandunderlyingfeatures.Inconclusion,wepresentabriefsummaryofkeyideasandageneraldirectionforfuturework.

ArticleOutline

1.Introduction

1.1.Applications

1.2.Importantissues

1.3.NeedforspecialMACprotocols

2.Classification

3.Reviewofnon-QoSMACprotocols

3.1.GeneralMACprotocols

3.1.1.Multipleaccesscollisionavoidance（MACA）

3.1.2.IEEE802.11MACscheme

3.1.3.Multipleaccesscollisionavoidance-byinvitation（MACA-BI）

3.1.4.Groupallocationmultipleaccesswithpacketsensing（GAMA-PS）

3.2.PowerawareMACprotocols

3.2.1.Powerawaremediumaccesscontrolwithsignaling（PAMAS）

3.2.2.Dynamicpowersavingmechanism（DPSM）

3.2.3.Powercontrolmediumaccesscontrol（PCM）

3.2.4.Powercontrolledmultipleaccess（PCMA）

3.3.Multiplechannelprotocols

3.3.1.Dualbusytonemultipleaccess（DBTMA）

3.3.2.MultichannelCSMAMACprotocol

3.3.3.Hop-reservationmultipleaccess（HRMA）

3.3.4.Multi-channelmediumaccesscontrol（MMAC）

3.3.5.Dynamicchannelassignmentwithpowercontrol（DCA-PC）

3.4.Protocolsusingdirectionalantennas

3.5.UnidirectionalMACprotocols

4.QoS-awareMACprotocols

4.1.IssuesaffectingQoS

4.2.ReviewofselectedQoS-awareMACprotocols

4.2.1.Real-timeMAC（RT-MAC）

4.2.2.DCFwithpriorityclasses

4.2.3.EnhancedDCF

4.2.4.Blackburst（BB）contention

4.2.5.Eliminationbysieving（ES-DCF）anddeadlinebursting（DB-DCF）

4.2.6.Multipleaccesscollisionavoidancewithpiggybackreservations（MACA/PR）

4.2.7.AsynchronousQoSenabledmulti-hopMAC

4.2.8.Distributedfairscheduling（DFS）

5.Summaryandfuturedirections

5.1.Futuredirections

5.1.1.Hidden/exposedterminalproblems

5.1.2.Interference-limitedmodel

5.1.3.Energyconservation

5.1.4.Singlechannelvs.multiplechannels

5.1.5.Multi-hopnetworks

5.1.6.Fairnessamongcompetingnodes

5.1.7.Directionalantennas

5.1.8.QoSissues

6.Conclusion

References

Vitae

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258

Microscopic3-Ddisplacementfieldmeasurementsusingdigitalspecklephotography  OriginalResearchArticle

OpticsandLasersinEngineering,Volume41,Issue5,May2004,Pages767-777

LindaLarsson,MikaelSjödahl,FredrikThuvander

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259

Algorithmsandprotocolsforstatelessconstrained-basedrouting  OriginalResearchArticle

ComputerCommunications,Volume26,Issue14,1September2003,Pages1570-1580

BaoxianZhang,MarwanKrunz

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Abstract

Qualityofservice（QoS）routinghasgenerallybeenaddressedinthecontextofreservation-basednetworkservices（e.g.ATM,IntServ）,whichrequireexplicit（outofband）signalingofreservationrequestsandmaintenanceofper-flowstateinformation.Ithasbeenrecognizedthattheprocessingofper-flowstateinformationposesscalabilityproblems,especiallyatcorerouters.Toremedythissituation,inthispaperweintroduceanapproachforstatelessQoSroutinginIPnetworksthatassumesnosupportforsignalingorreservationfromthenetwork.Instead,ourapproachmakesuseofthecurrentlyunusedtwobitsintheDiffServ（DS）byteoftheIPpacketheader.Simpleheuristicsareusedtoidentifyalow-costdelay-constrainedpath.Theseheuristicsessentiallydividetheend-to-endpathintoatmosttwo‘superedges’thatareconnectedbya‘relaynode’.Routersthatlieonthesamesuperedgeuseeitherthecostmetricorthedelaymetric（butnotboth）toforwardthepacket.Standardhop-by-hopforwardingisperformedwithrespecttoeithermetric.Twodifferentapproachesarepresentedforimplementingtherelay-basedforwarding.Inthefirstapproach,aprobingprotocolisusedtoidentifytherelaynodeandtheroutingmetricsofthesuperedges.Tunnelingandpacketencapsulationarethenusedtoforwardpacketsfromthesourcenodetotherelaynodeandthenfromtherelaynodetothedestinationnode.Thesecondapproachdoesnotrequireprobing,butinsteadreliesonthetime-to-live（TTL）fieldintheheaderoftheIPpacket.Simulationsarepresentedtoevaluatethecostperformanceofthevariousapproaches.

ArticleOutline

1.Introduction

1.1.Motivation

1.2.Networkmodelandproblemformulation

2.Pathselectionalgorithms

2.1.Source-basedheuristics

2.2.CorrectnessoftheProposedHeuristics

2.3.Probe-baseddistributedheuristic

3.Dynamicforwardingmechanisms

3.1.Tunnelingandencapsulation-basedforwarding

3.2.TTL-Basedforwarding

4.Simulationresults

5.Conclusions

Acknowledgements

References

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260

Researchoncomputer-aidedcreativedesignplatformbasedoncreativitymodel  OriginalResearchArticle

ExpertSystemswithApplications,InPress,CorrectedProof,Availableonline6February2011

XiaoYingLiu,YanLi,PeiYuanPan,WenQiangLi

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Abstract

Sinceexistingcomputer-aidedcreativedesignsystemshavevariouslimitations,sobasedontheguidingideologyofhuman-machinecooperation,thefactorsthataffectthecreativityofadesignerareanalyzedfromcognitivepsychologypointofviewandacreativitymodelforindividualdesignersisestablished.Throughanalysisofthecreativitymodel,themechanismofhowcomputersupporttoolaffectsadesigner’screativityanditsmajorelementsareidentified.Intermsofthecharacteristicsofproductdesign,incorporatingcognitivescience,informationtechnologyanddesigntechnology,acreativeproductdesignmethodandcognitiveprinciplesthatsuchcomputersupporttoolshouldfollowarepresented.Apreliminaryprototypesoftwaresystemofcomputer-aideddesignforproductinnovationwasdeveloped,whosemainfunctionistoaidthedesigner’screativebehavior,insteadoftheautomationofconceptualdesign.Finally,aninstanceisgiventodemonstratethepracticabilityandvalidityoftheprototypesystem.

ArticleOutline

1.Introduction

2.Creativitymodelforindividualdesigners

3.Creativeproductdesignmethod

4.Cognitiveprinciplesforcomputersupporttool

4.1.Supportproblem’sexternalrepresentations

4.2.Supportproblem-spacerepresentation

4.3.Focusattentiononrelevantinformation

4.4.Improvethecapacityofworkingmemory

4.5.Supportinformationretrieval

4.6.Supportknowledgesupplement

5.Overallschemeofcomputer-aidedcreativedesignplatform

5.1.FunctiondescriptionofCACDP

5.2.LogicalarchitectureofCACDP

5.3.Interfacelayer

5.4.Applicationprogramserverlayer

5.5.Resourcelayer

5.6.FlowchartofCACDP

6.ImplementationofCACDP

6.1.Creativestrategiesandassistanttools

6.2.Scientificeffectsbase

6.3.Multi-levelwebsearchingtool

7.AnapplicationexampleofCACDP

8.Conclusionandfuturework

Acknowledgements

References

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Highlights

►Acreativitymodelforindividualdesignersisestablished.►Acreativeproductdesignmethodispresented.►Cognitiveprinciplesthatsuchcomputersupporttoolshouldfollowarepresented.►Apreliminaryprototypesoftwaresystemofcomputer-aideddesignhasbeendeveloped.

261

Pathplanningforin-fieldnavigation-aidingofserviceunits  OriginalResearchArticle

ComputersandElectronicsinAgriculture,Volume74,Issue1,October2010,Pages80-90

D.D.Bochtis,C.G.Sørensen,S.G.Vougioukas

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Abstract

Agriculturalfieldoperations,suchasseeding,harvesting,spraying,andfertilizing,aretypicallycarriedoutbymulti-machinerysystemscomprisingoneormoreself-propelledortractor-pulledunits,andoneormoreservice–mainlytransport–units.Theoperationofaserviceunitmustbecarefullyplannedbecauseitsexecutionefficiencycansignificantlyaffecttheproductivityofthewholesystem.

Inthispaper,analgorithmicapproachforthegenerationofoptimalin-fieldpathstobefollowedbyserviceunits,wasdevelopedanddemonstrated.Bothstationaryandon-the-gounloadingoperationsaresupported.