簡介：ABSTRACTINTHISPAPERWEPROPOSEANINTEGRATIONDESIGNOFBOTHANEARFIELDCOMMUNICATIONNFCANDASMARTPHONETOACHIEVEADOORLOCKCONTROLSYSTEMTHISDESIGNCONSISTSOFABUILTINNFCCAPABILITIESOFASMARTPHONECOMBINEDWITHADEDICATEDAPPLICATIONDEEMEDTOBEAKEYTOOPENTHEDOORBYMEANSOFTHELOGICALLINKCONTROLPROTOCOLLLCPEXCHANGETOGETHERWITHATIMESTAMPTOMATCHTHEUSER’SOWNSETOFPASSWORDINFORMATIONTOVERIFYWHOISAPERMISSIONSUSERORNOTWHENVERIFIEDTHESPECIFICDOORWHICHISSECUREDBYTHISDOORLOCKCONTROLSYSTEMIMMEDIATELYOPENSIINTRODUCTIONTHENFCTECHNOLOGYUSESTHERADIOFREQUENCYIDENTIFICATIONRFIDTECHNOLOGYTOPERFORMNONCONTACTSTANDARDDATAEXCHANGEBETWEENTWONFCDEVICESPREVIOUSLY,THERFIDTECHNOLOGYWASVERYCOMMONLYUSEDINCONTACTLESSACCESSCONTROLCARDS,ELECTRONICTAGSANDETCSYSTEMSANDNOW,NFCCOMMUNICATIONAPPLICATIONSOFRFIDTECHNOLOGYHAVEGRADUALLYBEENREPLACEDNFCTECHNOLOGYHASGRADUALLYBECOMEINTEGRATEDINSMARTPHONESWHICHCANDIRECTLYREADNFCTAGSINAMESSAGE,SUCHAS,FOREXAMPLECREDITCARDNUMBERS,TRAVELCARDNUMBERSANDTHESETRANSACTIONRECORDSAREABLETOBESTOREDINANNFCTAG1NFCCOMMUNICATIONRESULTSARECONVENIENTMOREOVER,THISSYSTEMCANALSOBEINTEGRATEDINTOADOORACCESSSECURITYSYSTEM2THISPAPERPROPOSESADESIGNTHATDOESNOTNEEDTOUSEACOMPLEXFACEIDENTIFYSYSTEM,BUTINSTEADUSESACERTAINSAFETYLOCKSYSTEMTOGETHERWITHNFCTECHNOLOGYFIGURE1SHOWSTHEDIAGRAMMATICSKETCHOFTHESYSTEMWHICHINCLUDESAMAGNETICLOCK,ACCESSCONTROLSYSTEMSACSANDANNFCBASEDSMARTPHONEONLYTWOSTEPSARENECESSARYFORAUSERTOBEABLETOOPENADOOR,“SENSING“AND“ENTERPASSWORD“INTHISSYSTEMWITHAPASSWORDAPPLICATIONBUILTINTHESMARTPHONE,THESECURITYLEVELWILLBEHIGHERTHANTRADITIONALINRFIDDOORLOCKSYSTEMSIIHARDWAREARCHITECTUREFIGURE2SHOWSASMARTPHONEANDADOORLOCKSYSTEMHARDWAREARCHITECTURETHEACCESSCONTROLSYSTEMCANBEDIVIDEDINTOFIVEPARTSMICROCONTROLLERSMCU,MAGNETICLOCK,REALTIMECLOCKMODULE,STATUSINDICATIONANDTHENFCREADERMODULEASSHOWNINFIGURE2,WHICHISALOWPOWERMCUCHIPINADDITIONTOCONTROLLINGTHEMAGNETICLOCKON/OFF,BUZZERSOUNDSINFORMANDLEDLIGHTSINDICATEWHATISTAKINGPLACETHEREARETWOMOREFUNCTIONSFIRST,ITREADSTHETIMEBYMEANSOFAREALTIMECLOCK,WHICHWILLENCODETHECARDNUMBER,TIMEANDPASSWORDS,ALLWHICHBECOMEASERIALNUMBERSECOND,ITDECODESTHOSEDATAWHICHAREOBTAINEDFROMASMARTPHONEWITHANNFCCARDREADERANDCOMPARESTHERESULTWITHITSOWNDATAAREATODETERMINEIFANINDIVIDUALISANAUTHORIZEDUSERORNOTFIGURE3SHOWSTHATTHEDOORLOCKSYSTEMWITHANINTERNALMCUHASBECOMETHEMAINFUNCTIONMODULETHEMCUUSESASERIALPERIPHERALINTERFACETOCONNECTWITHTHENFCREADERMODULETHENFCDATAEXCHANGEFORMATNDEFMESSAGEISDESIGNEDBYUSINGANOPENSOURCELIBRARYSUPPORTEDBYASMARTPHONETHEREFORE,MCUCANEASILYTOACCESSTHENFCTAGINFORMATIONTHEMCUUSESANI2CINTERFACECONNECTEDWITHAREALTIMECLOCKMODULETOOBTAINTHETIMESTAMPWHENTHESMARTPHONEACCESSESTHESYSTEM,THETIMEWILLBERECORDEDBYTHEREALTIMECLOCKMODULETHESYSTEMWILLCOMBINEITWITHTHEPASSWORDINTOASEQUENCECODETOIDENTIFYWHETHERTHEDOORCANBEOPENEDHENCE,THISDESIGNWILLSTRENGTHENTHESECURITYOFTHEORIGINALPASSWORDDESIGNANDIMPLEMENTATIONOFADOORLOCKCONTROLBASEDONANEARFIELDCOMMUNICATIONOFASMARTPHONECHIHUANGHUNG,YINGWENBAI,JEHONGRENDEPARTMENTOFELECTRICALENGINEERING,FUJENCATHOLICUNIVERSITY,NEWTAIPEICITY,TAIWANGRADUATEINSTITUTEOFAPPLIEDSCIENCEANDENGINEERING,FUJENCATHOLICUNIVERSITY,TAIWANDEPARTMENTOFINFORMATIONTECHNOLOGY,LEEMINGINSTITUTEOFTECHNOLOGY,NEWTAIPEICITY,TAIWANFIG1ARRANGEMENTSOFTHEDOORLOCKSYSTEMWHICHINCLUDESASMARTPHONECONTROLMECHANISMFIG2HARDWAREARCHITECTUREOFTHEDOORLOCKSYSTEMWITHASMARTPHONENFC2015INTERNATIONALCONFERENCEONCONSUMERELECTRONICSTAIWANICCETW9781479987450/15/3100?2015IEEE45IIISOFTWAREDESIGNIMPLEMENTATIONTHESOFTWAREDESIGNISDIVIDEDINTOTWOMODULESSMARTPHONEANDDLSOPERATIONMODULETHESMARTPHONESHOULDHAVEANNFCSYSTEMTHATCANBECOMPATIBLEWITHOURSYSTEMTHEDLSPROGRAMISDESIGNEDBYUSINGTHEEMBEDDEDPLATFORMTHEINTERNALNDEFMESSAGEPARTUSESTHEOPENSOURCELIBRARYSUPPORTEDBYTHESMARTPHONE4ASMARTPHONEOPERATIONMODULEFLOWCHARTFIGURE4SHOWSTHEINITIALINTERFACEANDTHEKEYPADINTERFACETHEINITIALINTERFACEPROVIDESTHE“SMARTPHONEID”WHICHISINPUTINTOTHEDOORLOCKSYSTEMWHENTHESYSTEMISSETTOTHEREADMODE,THEUSERCANENTERTHEUSERPASSWORDBDOORLOCKSYSTEMOPERATIONMODULEWHENTHEDLSOBTAINSPERMISSION,THESMARTPHONEPROVIDESTHEINTERFACEOFTHE“STARTNUMERICKEYPADPASSWORDSNKP”TOTHEUSERTHEDOORLOCKSYSTEMREADSTHE“NUMERICPASSWORD”ANDOBTAINSATIMESTAMPVIATHEREALTIMECLOCKMODULEIFTHEIDENTIFICATIONOFTHEDOORLOCKSYSTEM“NUMERICPASSWORD”ISCORRECT,THENTHEDOORLOCKSYSTEMOPENSTHEMAGNETICLOCKIFTHE“NUMERICPASSWORD”ISINERROR,THENTHEDOORLOCKSYSTEMTRIGGERSTHEBUZZERTOSOUNDIVEXPERIMENTRESULTSTABLEISHOWSTHEACTUALMEASUREMENTOFTHEPOWERCONSUMPTIONOFEACHMODULETHENFCREADERMODULEOFTHISDESIGNCONSUMESONLY1584MWSTANDBYPOWERAFTERCOMPARINGOTHERDESIGNS,WENOTETHATOURDESIGNCONSUMESLESSSTANDBYPOWERTHANTHATOFOTHERDESIGNSTABLEITHEPOWERCONSUMPTIONOFEACHPARTOFTHISDESIGNPOWERCONSUMPTIONSTANDBYCONSUMPTIONOPERATINGCONSUMPTIONACTIVEBUZZER055MW210MWNFCREADERMODULE1584MW528MWMCU70MW735MWTOTAL23345MW810MWTABLEIICOMPARESOURDESIGNWITHOTHERDOORACCESSSYSTEMDESIGNSDESIGNAUSESASMARTPHONEWITHNFCREADERCOMMUNICATION,ANDOBTAINSTHEPRESTOREDENCODINGPICTURESTHESMARTPHONECONNECTSTOAREMOTESERVER,DECODESTHEENCODEDPICTURES,ANDOBTAINSAPERMISSIONPASSWORDDESIGNBUSESASMARTPHONEWITHAMCUBLUETOOTHCONNECTIVITYTHEMCUCONNECTSTOTHENFCREADER,ANDITSMESSAGEISTRANSMITTEDTOTHEOTHERENDOFNFCREADERDESIGNAANDBBOTHUSESMARTPHONESWITHANNFCFUNCTIONTOVERIFYANDGIVEPERMISSIONTOOPENTHEDOORBUTINTHISDESIGN,WEADDAPERSONALPASSWORDTHATCANPROVIDEMOREPROTECTIONFORTHESYSTEMTABLEIIACOMPARISONOURDESIGNWITHOTHERSYSTEMDESIGNSDESIGNA2DESIGNB3OURDESIGNPASSCODEMATCHNONOYESTIMESTAMPNONOYESCONVENIENCELOWHIGHHIGHSECURITYHIGHHIGHHIGHPOWERCONSUMPTIONHIGHHIGHLOWVCONCLUSIONTHISPAPERISADESIGNOFADOORLOCKSYSTEMWHICHCANBOTHIDENTIFYA“SMARTPHONEID”,ANDAVOIDAMALICIOUSREADINGOFANONPRIVILEGEDDEVICETHESMARTPHONEOBTAINSTHE“STARTNUMERICKEYPADPASSWORD”PERMISSION,WHICHISCONVERTEDINTOTHENUMERICKEYBOARDINTERFACEWHENENTERINGAPASSWORDTHEREISALIMITOF3TIMESTOPREVENTMALICIOUSPEOPLEFROMBREAKINGTHELOCKCODEINORDERTOBREAKINTOAHOUSETOPREVENTTHELEAKAGEOFANYDATAMESSAGE,THE“NUMERICPASSWORD”ISCOMBINEDWITHATIMESTAMPTHISDESIGN,WHICHDOESNOTREQUIRETHEUSERTOHAVEANNFCTAG,ISBOTHANIMPROVEDANDAMORECONVENIENTDOORLOCKSYSTEMVIREFERENCES1THOMASKORAKANDLUKASWILFINGER,“HANDLINGTHENDEFSIGNATURERECORDTYPEINASECUREMANNER”,IEEE2012INTERNATIONALCONFERENCEONRFIDTECHNOLOGIESANDAPPLICATIONSRFIDTA,PP107112,NOV20122PENGLOONTEH,HUOCHONGLING,ANDSOONNYEANCHEONG,“NFCSMARTPHONEBASEDACCESSCONTROLSYSTEMUSINGINFORMATIONHIDING”,2013IEEECONFERENCEONOPENSYSTEMICOS,PP1317,DEC2420133NURBEKSAPARKHOJAYEV,AIGULDAUITBAYEVA,AYBEKNURTAYEV,ANDGULNAZBAIMENSHINA,“NFCENABLEDACCESSCONTROLANDMANAGEMENTSYSTEM”,2014INTERNATIONALCONFERENCEONWEBANDOPENACCESSTOLEARNINGICWOAL,PP14,NOV252720144NFCDATAEXCHANGEFORMATNDEF,NFCFORUMTECHNICALSPECIFICATION,REV10,JUL2006FIG4FLOWCHARTSHOWINGTHESMARTPHONEINITIALINTERFACEANDTHENUMERICKEYPADLOWVOLTAGEMCUSCLKMOSIMISOSSVCCREALTIMECLOCKMODULESDASCLSCLSDASMARTPHONENEARFIELDCOMMUNICATIONBUZZERRELAYTRANSFORMERHIGHVOLTAGEMAGNETICLOCK1234567890VCCNFCREADERMODULESCLKMOSIMISOSSFIG3BLOCKDIAGRAMOFTHEDOORLOCKSYSTEM46

簡介：此文檔是畢業(yè)設計外文翻譯成品（含英文原文中文翻譯），無需調整復雜的格式下載之后直接可用，方便快捷本文價格不貴,也就幾十塊錢一輩子也就一次的事外文標題SMARTSHOPPINGSYSTEMANDROIDAPPLICATION外文作者MSMANSIMHASKE,MSMAYURISAWANT,MSEKTABHATTAD,MSAMRUTAGAIKWADANDPROFMANOJMULIK文獻出處INTERNATIONALJOURNALOFMATHEMATICALARCHIVE85,2019,712如覺得年份太老，可改為近2年，畢竟很多畢業(yè)生都這樣做英文1726單詞，10102字符字符就是印刷符，中文2800漢字。（如果字數多了，可自行刪減，大多數學校都是要求選取外文的一部分內容進行翻譯的。）SMARTSHOPPINGSYSTEMANDROIDAPPLICATIONABSTRACTINTODAYSLIFEGOINGTOMALLSFORSHOPPINGISINCREASINGRAPIDLYPEOPLETAKETHEITEMANDPUTITINTOTROLLEYAFTERDONEWITHSHOPPINGTHEYGOFORBILLINGATTHEBILLINGCOUNTERBUTASTHEREAREMANYPEOPLESTANDINGINQUEUEFORBILLINGPURPOSE,SOLOTSOFTIMEISREQUIREDFORTHEINDIVIDUALSFORBILLINGBECAUSEOFEXISTINGBARCODETECHNOLOGYTOREDUCETHISTIME,WEAREPROPOSEDASYSTEMBASEDONNFCTECHNOLOGY5THESYSTEMCONTAINSTHEITEMSATTACHEDWITHNFCTAG,ANDROIDPHONEHAVINGNFCREADERWHICHREADSTHETAGINFORMATIONWHENPUTINTOTHETROLLEYTHENTHISINFORMATIONISSENDTOMAINBILLINGSERVERWHICHCALCULATESTHETOTALNUMBEROFPURCHASEDITEMSANDSENDSTHECALCULATEDBILLTOTHEDEVICEATTACHEDTOTROLLEYFORDISPLAYINGITONDISPLAYOFSMARTPHONEALONGWITHTHISSYSTEMWEAREIMPLEMENTINGANANDROIDAPPLICATIONFORREWARDINGFACILITYTHEAPPLICATIONISBASEDONTHETROLLEYNUMBERANDTOTALNUMBEROFPURCHASEDITEMSKEYWORDSCLIENT/SERVER,NFC,EMBEDDEDSYSTEM,ANDROIDMOBILEPHONE,NFCREADER,PRODUCTIVITYTIME,SUPERMARKET,BARCODESCANNER,SENSORFIGUREANDROIDLAYEREDARCHITECTUREIIMOTIVATIONOURAIMISTODEVELOPASYSTEMTHATCANBEUSEDININDUSTRYORSHOPPINGMALLSTOSOLVETHECHALLENGESLIKELONGQUEUEONCOUNTERSWEFIRMLYBELIEVEINMAKINGOURENVIRONMENTASMARTERANDDIGITIZEDIIIGOALANDOBJECTIVESOVERALLGOALSANDOBJECTIVESOFSOFTWAREISTOELIMINATETIMETAKENINBILLINGCOUNTERINSUPERMARKETSANDINCREASESCUSTOMERSATISFACTIONITREDUCESMANPOWERREQUIREDINBILLINGSECTIONINCREASEPRODUCTIVITYTIMETHEOBJECTIVEOFTHISSOFTWAREISTOPROVIDEEASYASSISTANCETOBOTHTHECUSTOMERASWELLASTHEMERCHANTWITHPROPERDATABASEANDINFORMATIONIVSYSTEMDESIGNOURSYSTEMISAIMEDTODESIGNTHESMARTSHOPPINGINTHEMALLSTHECUSTOMERCANPURCHASEDIFFERENTPRODUCTSINTHEMALLAFTERSHOPPINGCUSTOMERMUSTWAITINTHEQUEUESOTOREDUCETHATTIMEOURSYSTEMISGOINGTOHELPAFTERPURCHASINGEACHPRODUCTCUSTOMERCANSCANTHEPRODUCTIENFCTAGVIANFCSCANNERWHICHISINBUILTINTHESMARTPHONETHETOTALISAUTOMATICALLYDONEBYTHESERVERTHESERVERANDTHESMARTPHONEARECONNECTEDVIAWIFI

簡介：此文檔是畢業(yè)設計外文翻譯成品（含英文原文中文翻譯），無需調整復雜的格式下載之后直接可用，方便快捷本文價格不貴,也就幾十塊錢一輩子也就一次的事外文標題STUDENTINFORMATIONMANAGEMENTSYSTEMBASEDONANDROIDPLATFORM外文作者WANGJIANFA,LIUJUAN,JIAOLIANGYU文獻出處ADVANCEDMATERIALSRESEARCHVOLS100610072018PP10571060如覺得年份太老，可改為近2年，畢竟很多畢業(yè)生都這樣做英文1578單詞，10638字符字符就是印刷符，中文2826漢字。（如果字數多了，可自行刪減，大多數學校都是要求選取外文的一部分內容進行翻譯的。）STUDENTINFORMATIONMANAGEMENTSYSTEMBASEDONANDROIDPLATFORMKEYWORDSSYSTEMDESIGN,SOFTWAREDESIGN,ANDROIDSYSTEM,MANAGEMENTSYSTEMABSTRACTINTHISPAPER,THEDEVELOPMENTOFANDROIDBASEDSTUDENTMANAGEMENTSOFTWARESYSTEMTOENABLESTUDENTSTOSCHOOL,INTERACTIONWITHPARENTSANDTHESCHOOLHASANEWPLATFORM,ONTHISBASIS,THEPROMOTIONOFTHEWORKPROCESSSIMPLE,EFFICIENTWORK,EXPERIENCEANDSCIENTIFICSTUDENTMANAGEMENTANDQUALITY,MAKINGSCHOOLSREACHNEWHEIGHTSINTHEPROMOTIONOFINFORMATIONTECHNOLOGYINTRODUCTIONWITHTHEACCELERATIONOFTHERAPIDDEVELOPMENTOFNETWORKTECHNOLOGYANDINFORMATIONTECHNOLOGYENTERPRISESANDNATIONALCONSTRUCTIONPROGRESSOFINFORMATIONMANAGEMENT,WEBBASEDAPPLICATIONSANDMOBILETECHNOLOGYISINCREASINGLYCOMMON,THESEAPPLICATIONSLARGELYENHANCETHECOUNTRYSENTERPRISESINFORMATIONMANAGEMENTTOIMPROVETHEEFFICIENCYOFPRODUCTIONANDWORKORGANIZATIONTHEWHOLESYSTEMISDIVIDEDINTOFOURPARTS,NAMELY,THESTUDENTINFORMATIONCENTER,INFORMATIONDISSEMINATIONCENTER,INTERACTIONCENTERHOMESCHOOL,ANDSTUDENTS’MORALCENTERTHISFOURPARTSHAVEDIFFERENTFUNCTIONSSTUDENTINFORMATIONCENTER,THEFOUNDATIONISMAINLYRESPONSIBLEFORSTUDENTINFORMATION,GRADES,CURRICULUMANDOTHERENTRY,INQUIRY,STUDENTSTHROUGHTHESTUDENTINFORMATIONCENTERTOCHECKTHEIRTESTSCORESANDRANKINGINFORMATION,YOUCANALSOSEETHEIRSTUDENTINFORMATION,BUTCANALSOSEETOTHECURRICULUMANDSOONINFORMATIONCENTER,THESCHOOLSPRINCIPALISRELEASEDLESSONPLANS,HOMEWORKRELEASE,RELEASESTUDENTINFORMATION,HOLIDAYNOTICEPUBLISHING,STUDENTSANDTEACHERSASWELLASPARENTSCANTHENSEEWHERETHEUNIVERSITYSEVERYMOVEHOMESCHOOLINTERACTIONCENTER,THEMAINVOTINGPLATFORMINCLUDINGHOMESCHOOL,HOMESCHOOLSMSPUBLISHINGPLATFORM,PSYCHOLOGICALCOUNSELINGPLATFORMSEVERALPARTSFIGURE2SYSTEMDESIGNFLOWVOTEASPECTSOFTHEPROJECTHOMESCHOOLSCHOOLISSUEDVOTINGPLATFORMUSERSCANVOTEFORALLPARENTS’IMMEDIATERELEASEFIG2CHSCSMSPUBLISHINGPLATFORMTHATCANFACILITATECOMMUNICATIONBETWEENTHESCHOOLANDPARENTS,ANDMYHEARTBROKETHROUGHFACETOFACECONSULTATIONPLATFORMCOMMUNICATIONBARRIERS,TOPARENTSANDSTUDENTSAVIRTUALSPACETOEXPRESSMOODPROCESSDESIGNINCLUDESTHEFOLLOWINGASPECTSTHEDEVELOPMENTENVIRONMENTTOBUILDASERVER,ANDCONFIGURETHESERVERCREATEADATABASE,BASEDONTHENEEDSOFTHEDATATABLEDESIGNDEVELOPMENTSERVERINTERFACEINTERACTIONMODULEDESIGNISAPPLIEDTOTHEDATABASESERVERBUILDCLIENTUSERINTERFACEDESIGNTHECLIENTANDSERVERSIDEINTERACTIONMODULEREALIZATIONOFSYSTEMFUNCTIONSSTUDENTINFORMATIONCENTER,FORTHECLIENTTOGETTHESTUDENTSBASICINFORMATIONTOTHESERVER,THEUSERCANOBTAINTHEINFORMATIONCENTERBYTHESTUDENTBASICSTUDENT

簡介：此文檔是畢業(yè)設計外文翻譯成品（含英文原文中文翻譯），無需調整復雜的格式下載之后直接可用，方便快捷本文價格不貴,也就幾十塊錢一輩子也就一次的事外文標題ANINFORMATIONACQUISITIONSYSTEMFORAGRICULTURALPRODUCTORIGINSAFETYBASEDONANDROIDSMARTPHONE外文作者SHOUHUIPAN,KAIYIWANG,ZHIBINWANG,YANYUNHAN1ANDXIAOFENGWANG文獻出處20192NDINTERNATIONALCONFERENCEONMECHATRONICS,CONTROLANDAUTOMATIONENGINEERINGMCAE2019如覺得年份太老，可改為近2年，畢竟很多畢業(yè)生都這樣做英文2240單詞，14948字符字符就是印刷符，中文3438漢字。（如果字數多了，可自行刪減，大多數學校都是要求選取外文的一部分內容進行翻譯的。）ANINFORMATIONACQUISITIONSYSTEMFORAGRICULTURALPRODUCTORIGINSAFETYBASEDONANDROIDSMARTPHONEKEYWORDSAGRICULTURALPRODUCT,ORIGINSAFETY,SMARTPHONEABSTRACTCURRENTLY,THEDATAACQUISITIONMETHODFORAGRICULTURALPRODUCTORIGINSAFETYISSTILLLAGGINGBEHIND,THUSITISDIFFICULTTOUPLOADTHEMONITORINGDATAINATIMELYANDCONVENIENTWAYANINFORMATIONACQUISITIONSYSTEMFORAGRICULTURALPRODUCTORIGINSAFETYBASEDONANDROIDSMARTPHONEWASDEVELOPEDTHEDESIGNOFTHEINFORMATIONACQUISITIONSYSTEMWASBASEDONTHEC/SARCHITECTURE,INCLUDINGSMARTPHONEAPPANDSERVERSIDESOFTWARETHESMARTPHONEAPPCANACHIEVETHERAPIDPOSITIONINGOFTHEMONITORINGPOINT,DATACORRECTION,REALTIMEDATATRANSMISSIONANDAUTOMATICARCHIVINGDEMONSTRATIONRESULTSSHOWTHATTHESYSTEMHASTHECHARACTERISTICSOFCONVENIENTCOLLECTION,RAPIDTRANSMISSIONANDHIGHEFFICIENCYCOMPAREDWITHTHETRADITIONALDATAACQUISITIONMODETHESYSTEMISSUITABLEFORTHEDATAACQUISITIONOFGRASSROOTSAGRICULTURALENVIRONMENTALMONITORINGSTATION,ANDITCANEFFECTIVELYTHEFRAMEWORKOFTHESYSTEMTHEFOLLOWINGPRINCIPLESSUCHASPRACTICABILITY,PROGRESSIVENESS,OPENNESS,ADAPTABILITYANDSECURITYWEREFOLLOWEDINTHEDESIGNOFTHESYSTEMTHEPRACTICALITYOFTHESYSTEMWASCONSIDEREDPRIORITY,IE,THEFUNCTIONALMODULESOFTHESYSTEMMUSTMEETTHEPRACTICALNEEDSOFDATAACQUISITIONOFAGRICULTURALORIGINSAFETYONTHISBASIS,THEFOLLOWINGPRINCIPLESSUCHASPROGRESSIVENESS,OPENNESS,ADAPTABILITYAREEMPHASIZEDLASTBUTNOTLEAST,SECURITYSHOULDBEPAIDSPECIALATTENTIONINORDERTOENSURETHESECURITYOFDATAINTHESYSTEMDESIGNMANYSECURITYMEASURESSUCHASUSERACCESSPOLICY,DATAENCRYPTIONANDSECUREACCESSAUTHENTICATION,WERECONDUCTEDTOENSURETHESECURITYOFDATATHESAFETYDATACOLLECTIONSYSTEMOFAGRICULTURALPRODUCTSORIGINCONSISTEDOFTWOPARTSCOLLECTINGTERMINALSOFTWARESMARTPHONEAPPANDSERVERSIDEPROGRAM,ADOPTINGC/SARCHITECTUREDESIGNWHERETHESMARTPHONEAPPWASMAINLYRESPONSIBLEFORDATAQUERY,DATACOLLECTIONANDSUBMISSIONSERVERSIDEPROGRAMWASMAINLYRESPONSIBLEFORDATASTORAGE,PROCESSINGANDSTATISTICALANALYSISDATAEXCHANGEBETWEENSMARTPHONEAPPANDSERVERSIDEPROGRAMWASCONDUCTEDBYCALLINGWEBSERVICEASSHOWNINFIGURE1,THEOVERALLARCHITECTUREOFTHESYSTEMWASDIVIDEDINTOTHREELAYERSBUSINESSAPPLICATIONLAYER,APPLICATIONSUPPORTLAYERANDDATABASELAYERTHESERVERCONSISTEDOFAPPLICATIONSERVERANDDATABASESERVER,WHEREAPPLICATIONSERVERPROGRAMWASDEVELOPEDBYJAVALANGUAGEJDK16,HIBERNATE4ANDSPRING4BASEDONECLIPSEIDEPLATFORM,ANDDATABASESERVERWASMAINLYRESPONSIBLEFORTHESTORAGEOFDATA,ONWHICHTHEMYSQL56SOFTWAREISRUNNINGTHESMARTPHONEAPPWASDEVELOPEDUSINGANDROIDSTUDIOIDEBASEDONANDROIDSDKVERSION60THATCANCOMPATIBLEWITHANDROIDVERSION40ABOVETHERESTOFTHEPAPERWILLINTRODUCETHEARCHITECTUREANDFUNCTIONALFEATURESOFMOBILEAPPINDETAIL

簡介：REALTIMEIMPLEMENTATIONOFINTELLIGENTMODELINGANDCONTROLTECHNIQUESONAPLCPLATFORMCURTISPARROTT,STUDENTMEMBER,IEEEANDGANESHKVENAYAGAMOORTHY,SENIORMEMBER,IEEEREALTIMEPOWERANDINTELLIGENTSYSTEMSLABORATORYMISSOURIUNIVERSITYOFSCIENCEANDTECHNOLOGY,ROLLA,MO65401USACAP9QDMSTEDUANDGKUMARIEEEORGABSTRACT–PROGRAMMABLELOGICCONTROLLERSPLCSHAVEBEENUSEDFORMANYDECADESFORSTANDARDCONTROLININDUSTRIALANDFACTORYENVIRONMENTSOVERTHEYEARS,PLCSHAVEBECOMECOMPUTATIONALEFFICIENTANDPOWERFUL,ANDAROBUSTPLATFORMWITHAPPLICATIONSBEYONDTHESTANDARDCONTROLANDFACTORYAUTOMATIONDUETOTHENEWADVANCEDPLC’SFEATURESANDCOMPUTATIONALPOWER,THEYAREIDEALPLATFORMSFOREXPLORINGADVANCEDMODELINGANDCONTROLMETHODS,INCLUDINGCOMPUTATIONALINTELLIGENCEBASEDTECHNIQUESSUCHASNEURALNETWORKS,PARTICLESWARMOPTIMIZATIONPSOANDMANYOTHERSSOMEOFTHESETECHNIQUESREQUIREFASTFLOATINGPOINTCALCULATIONSTHATARENOWPOSSIBLEINREALTIMEONTHEPLCTHISPAPERFOCUSESONTHEALLENBRADLEYCONTROLLOGIXBRANDOFPLCS,DUETOTHEIRHIGHPERFORMANCEANDEXTENSIVEUSEININDUSTRYTHEDESIGNANDIMPLEMENTATIONOFANEUROCONTROLLERCONSISTINGOFTWONEURALNETWORKS,ONEFORMODELINGANDTHEOTHERFORCONTROL,ANDTHETRAININGOFTHESENEURALNETWORKSWITHPARTICLESWARMOPTIMIZATIONISPRESENTEDINTHISPAPERONASINGLEPLCTHENEUROCONTROLLERINTHISSTUDYISAPOWERSYSTEMSTABILIZERPSSTHATISUSEDFORPOWERSYSTEMOSCILLATIONDAMPINGTHEPLCISINTERFACEDTOAPOWERSYSTEMSIMULATEDONTHEREALTIMEDIGITALSIMULATORREALTIMERESULTSAREPRESENTEDSHOWINGTHATTHEPLCISASUITABLEHARDWAREPLATFORMFORIMPLEMENTINGADVANCEDMODELINGANDCONTROLTECHNIQUESFORINDUSTRIALAPPLICATIONSINDEXTERMS–COMPUTATIONALINTELLIGENCE,MODELING,NEUROCONTROL,PARTICLESWARMOPTIMIZATION,PROGRAMMABLELOGICCONTROLLERS,POWERSYSTEMSTABILIZERIINTRODUCTIONPROGRAMMABLELOGICCONTROLLERSPLCSHAVEBEENUSEDEXTENSIVELYININDUSTRIALAPPLICATIONSFORCONTROLFORDECADESDUETOTHEIRHIGHRELIABILITYANDROBUSTARCHITECTURE1THENEWESTPLCSHAVEMOVEDPASTJUSTAROBUSTPLATFORMINTOANEWREALMOFHIGHCOMPUTATIONALPOWERANDPROCESSORSPEEDTHESE,ALONGWITHTHEPLC’SHIGHLYEXPANDABLELAYOUT,MAKESITANIDEALPLATFORMFORFARBEYONDTHECLASSICALAPPLICATIONSTHESENEWAPPLICATIONSINCLUDEIMPLEMENTINGCOMPUTATIONALINTELLIGENCEBASEDMODELING,OPTIMIZATIONANDCONTROLTECHNIQUESTHATREQUIREFASTPROCESSINGPOWERTOBEEXECUTEDINREALTIMEWITHTHEABILITYTOCONTAINANALOGI/O,THEPLCISALSOIDEALFORINTERFACETOREALTIMESIMULATIONHARDWARE,SUCHASTHEREALTIMEDIGITALSIMULATORRTDSFORPOWERSYSTEMS2THERTDSISACUSTOMPARALLELPROCESSINGHARDWAREPLATFORMTHATALLOWSPOWERSYSTEMSTOBESIMULATEDANDITSACCESSORIESCONTROLLERS,TRANSFORMERS,RELAYSTOBETESTEDINREALTIME3THROUGHTHEUSEOFANALOGI/O,POWERCONTROLDEVICESCANBESEAMLESSLYTESTEDASIFTHEYWEREPARTOFTHEPHYSICALPOWERSYSTEMRUNNINGONTHESIMULATORTHISALLOWSFORTHETESTINGOFANYSUCHCONTROLDEVICECONTAININGLOWVOLTAGEI/OANDALLOWSTHEGAUGINGOFTHISCONTROLSCHEMEASALEGITIMATEREALWORLDAPPLICATIONTHEABILITYOFTHERTDSFORCONTROLANDPROTECTIONSYSTEMTESTINGHASBEENFURTHEREXPLOREDIN2THISMAKESTHEPLCRTDSPLATFORM,ANIDEALPLATFORMFORTESTINGTHEVIABILITYOFTHEPLCASAREALWORLDCONTROLPLATFORMFORCOMPUTATIONALINTELLIGENCETECHNIQUESINTHISPAPER,ACASESTUDYOFIMPLEMENTINGACONTROLLERBASEDONNEURALNETWORKSFORDAMPINGSPEEDOSCILLATIONSINGENERATORSISEXPLORED4THEPLCPLATFORMIMPLEMENTSTHENEURALNETWORKSREQUIREDTOREALIZETHEADAPTIVECONTROLANDTHESENEURALNETWORKSARETRAINEDUSINGPARTICLESWARMOPTIMIZATIONPSOALGORITHM5TOTHEKNOWLEDGEOFTHEAUTHORS,COMPUTATIONALINTELLIGENCETECHNIQUESHAVENOTBEENIMPLEMENTEDONPLCSWHICHAREKNOWNTOBEROBUSTPLATFORMSFORINDUSTRIALCONTROLSPOWERSYSTEMSTABILIZERSPSSSAREUSEDASANAUXILIARYCONTROLSYSTEMTOAGENERATOR’SEXCITATIONSYSTEMTHEPURPOSEOFTHEPSSISFORPOWERSYSTEMOSCILLATIONDAMPINGDURINGSMALLANDLARGESYSTEMDISTURBANCESBYPROVIDINGSUPPLEMENTARYCONTROLSIGNALSTOTHEGENERATOR’SAUTOMATICVOLTAGEREGULATORAVR6THESPEEDOSCILLATIONSCANTAKETHEFORMOFINTRAAREAANDINTERAREAMODESINAMULTIMACHINEPOWERSYSTEMINTRAAREAMODESFORMWHERETWOORMORESYNCHRONOUSMACHINESSWINGTOGETHERAGAINSTACOMPARATIVELYLARGEPOWERSYSTEMORLOADCENTERANDINTERAREAMODESINVOLVECOMBINATIONSOFMANYMACHINESONONEPARTOFAPOWERSYSTEMSWINGINGAGAINSTMACHINESONANOTHERPARTOFTHESYSTEM7ADVANCEDPOWERSYSTEMMODELINGANDCONTROLTECHNIQUESHAVEBEENEXPLOREDONAWIDEVARIETYOFPLATFORMS,INCLUDINGDIGITALSIGNALPROCESSORSDSPSANDFIELDPROGRAMMABLELOGICARRAYSFPGAS,INGREATDETAILHOWEVER,RESEARCHHASNEGLECTEDTHESTAPLEOFINDUSTRIALCONTROL,THEPROGRAMMABLELOGICCONTROLLERTHEPLCPLATFORMISUSEDEXTENSIVELYININDUSTRYDUETOITSVERYHIGHRELIABILITYANDEXPANDABILITYTHISEXPANDABILITYINCLUDESAWIDEVARIETYOFDIGITALANDANALOGI/OMODULESALONGWITHMANYDIFFERENTCOMMUNICATIONMODULESTHEPLCISALSODESIGNEDWITHAPOWERFULPROCESSORWITHTHEABILITYTODOREALTIMECONTROLOFAWIDEVARIETYOFCONTROLAPPLICATION1THISPAPERDEMONSTRATESTHEPOTENTIALOFPLCSFORIMPLEMENTINGCOMPUTATIONALINTELLIGENCEPARADIGMSINCLUDINGNEURALNETWORKSANDPARTICLESWARMOPTIMIZATIONINREALTIMEFORMODELINGANDCONTROLOFSYNCHRONOUSGENERATORSINAMULTIMACHINEPOWERSYSTEMENVIRONMENTTHISWORKISSUPPORTEDBYTHENSFCAREERGRANTECCS0348221ANDUSDEPTOFEDUCATIONGAANNFUNDINGAWARDEDTODRVENAYAGAMOORTHY9781424422791/08/2500?2008IEEE1VALUESOFITSOUTPUTASWELLASPASTMVALUESOFITSINPUTTHEINPUTSANDOUTPUTSOFTHEMODELARESPEEDDEVIATIONOFTHEPLANTGENERATORG1ORG3ANDTHEOUTPUTOFTHENEUROCONTROLLER,ANDTHEESTIMATEDSPEEDDEVIATIONSRESPECTIVELYHERE,BOTHNANDMARECHOSENTOBE2THEMAINREASONFORCHOOSINGTHREETIMESTEPVALUESISBECAUSEATHIRDORDERSYSTEMISSUFFICIENTFORTHEMODELINGTHEGENERATORDYNAMICSFORTHISSTUDYTHEMODELISAMULTILAYEREDFEEDFORWARDNEURALNETWORKFIG5TRAINEDUSINGTHEPSOALGORITHMTHEINPUTVECTORTOTHEMODELNETWORKISX?ANDTHEESTIMATEDSPEEDDEVIATIONATINSTANTK1IS1KΩΔFIG5NEURALNETWORKSYSTEMMODELSTRUCTURE,1,2,,1,2PSSPSSPSSKKKXVKVKVKΩΩΩΔΔ?Δ?????????110,1IIJJJAWX?∑2111IIADE??31011IIIKVDΩΔ?∑4BNEUROCONTROLLERTHENEUROCONTROLLERISALSOAMULTILAYERFEEDFORWARDNETWORKTRAINEDWITHPSOALGORITHMTHEINPUTSTOTHISSYSTEMARETHEACTUALSPEEDDEVIATIONANDTHETWOPREVIOUSVALUESOFAGENERATORANDTHEOUTPUTOFTHENEUROCONTROLLERISTHESUPPLEMENTARYCONTROLSIGNALTOTHEAVR,VPSSASSHOWNINFIG3THETRAININGOFTHENEUROCONTROLLERISSIMILARTOTHATDESCRIBEDIN4HOWEVERPSOISUSEDINLIEUOFBACKPROPAGATIONALGORITHMCPSOALGORITHMPSOISATYPEOFEVOLUTIONARYCOMPUTINGTECHNIQUETHEALGORITHMISBASEDONTHESIMULATIONOFTHESOCIALINTERACTIONOFBIRDSWITHINAFLOCKANDSCHOOLOFFISHBEINGAPOPULATIONBASEDSEARCHALGORITHM,ASWARMCONSISTSOFPARTICLESWHICHAREPOTENTIALSOLUTIONSTOTHEPROBLEMSOLVEDOROPTIMIZEDTHECHANGESINTHEPARTICLESPOSITIONINTHESEARCHSPACEISINFLUENCEDBYTHEPASTKNOWLEDGEOFTHESWARMASWELLASTHEPARTICLESOWNPASTKNOWLEDGEOFTHESEARCHSPACEATINITIALIZATION,EACHPARTICLEISRANDOMLYASSIGNEDTOAPOINTINTHESEARCHSPACE,ASWELLASGIVENARANDOMSTARTINGVELOCITYTHEPARTICLEISTHENFLOWNTHROUGHTHESEARCHSPACEWITHTHEINITIALVELOCITYTHEPARTICLEISTHENEVALUATEDASTOHOWWELLITSOLVESTHEPROBLEMATHANDTHISEVALUATIONISCALLEDTHEPARTICLE’SFITNESSTHISISTHENCOMPAREDTOTHEPARTICLE’SMEMORYOFITSBESTSOLUTIONOFTHEPROBLEM,THEPBESTPOSITIONIFTHENEWESTSOLUTIONISBETTERTHANTHECURRENTPBESTTHECURRENTFITNESSLOWERTHANTHEPBESTFITNESS,THEPBESTPOSITIONISUPDATEDTOTHECURRENTPOSITIONONCEALLTHEPARTICLESHAVEBEENEVALUATEDTHEPBESTWITHTHELOWESTFITNESSISCOMPAREDTOTHEGBESTPOSITIONFITNESSIFTHISPBEST’SVALUEISLOWERTHANTHECURRENTGBESTFITNESSTHENTHEGBESTPOSITIONISUPDATETOTHISPBEST’SLOCATIONTHISGBESTREPRESENTSTHESOCIALASPECTOFTHEALGORITHMAFTERTHESEUPDATESHAVEBEENDONETHEPSOEQUATIONSAREAGAINEVALUATED,ANDTAKETHEFORMSEENIN5AND6ALSO,ANEXAMPLEOFASINGLEPARTICLEUPDATECANBESEENINFIG6WHEREXIDKISTHEITHPARTICLE’SDTHDIMENSIONCURRENTPOSITIONXK1ISTHEITHPARTICLE’SDTHDIMENSIONPOSITIONAFTERTHEPSOUPDATE,ATTHENEXTTIMESTEPVIDKISTHEITHPARTICLE’SDTHDIMENSIONCURRENTVELOCITYVIDK1ISTHEITHPARTICLE’SDTHDIMENSIONVELOCITYATTHENEXTTIMESTEPPIDISTHEPBESTPOSITIONOFITHPARTICLE’SPGDISTHEGROUPSBESTPOSITIONORGBESTFORTHEDTHDIMENSIONWISTHEINERTIAWEIGHTCONSTANTC1ANDC2ARETHECOGNITIVEANDSOCIALACCELERATIONCONSTANTSRESPECTIVELY511221IDIDIDIDGDIDVKWVKCRANDPKXKCRANDPKXK???????511IDIDIDXKXKVK6KVWID?11KXKPRANDCIDID???22KXKPRANDCIDGD???1KVIDFIG6PSOPARTICLEUPDATEPROCESSFORTWODIMENSIONALCASE53

簡介：畢業(yè)設計（論文）外文資料翻譯畢業(yè)設計（論文）外文資料翻譯系部計算機科學與技術系專業(yè)計算機科學與技術（專升本）姓名學號外文出處IEEEINTERNATIONALCONFERENCEONCOMPUTERANDINFORMATIONTECHNOLOGY指導老師評語指導老師評語簽名年月日一個權限的難題ANDROID智能手機上安裝應用程序的權限2就必須花費25的手續(xù)費來開通自己的個人賬號，通過上傳自己的應用程序軟件，并從中獲取利潤。當然，ANDROID市場是不會去檢查你的應用程序到底包含哪些基本信息。然而，這對ANDROID用戶是非常不利的。對此谷歌來完成這項保護ANDROID手機用戶的任務。通過調查我們提供給ANDROID用戶兩種安裝選擇。1你是否愿意安裝此軟件到你的手機上2你是否信任開發(fā)商去訪問你的個人信息通過我們的走訪調查可知，大部分的ANDROID手機用戶都希望應用程序提供詳細的權限安裝問題，并表示這是對于手機安全性的一個必不可少的環(huán)節(jié)。ANDROID用戶還提出應該由用戶自己選擇什么時候彈出權限消息提示框，這樣做的目的是為了減少給客戶到來不必要的麻煩。2相關工作相關工作雖然ANDROID手機僅僅只是在2008年發(fā)布后的不久誕生的，但是有一個重要的工作需要我們去完成的，那就是學習ANDROID手機的權限安全性問題。提出這個重要的理論依是根據對ANDROID手機運行的安全性或者提高系統(tǒng)的安全性能出發(fā)的。EYCK的相關的工作主要是研究ANDROID系統(tǒng)的安全性和面向用戶權限之間的差異化，重點分析在ANDROID用戶關閉手機的時候，通過權限請求消息與手機之間建立通信功能。VIDA的主要工作是研究如何讓ANDROID應用程序接受請求權限，通過研究后來發(fā)現(xiàn)，權限存在一個“權限危機”的現(xiàn)象。由于ANDROID提供的API文檔接口與用戶實際接受的應用程序請求消息無法建立連接，所以這就是開發(fā)人員現(xiàn)在面臨的一個主要難題。FELT主要工作是揭秘ANDROID權限的工作原理，試圖進一步解釋權限的開發(fā)商為什么要怎么開發(fā)。然而，無論是最終用戶探討這些應用程序權限的理解。在我們的工作調查中發(fā)現(xiàn)雖然ANDROID手機用戶明明知道安裝一個應用程序可能存在風險或者病毒，但是還是有很多ANDROID用戶試圖為自己找借口忽略這些安裝權限消息提示框，常常抱怨為什么安裝一個應用程序軟件要怎么多麻煩的權限消息提示框。另一些人看待ANDROID應用程序權限問題的態(tài)度是試圖去簡化應用程序權限的安裝過程或者跟其他智能手機對比安裝權限的過程。通過ANDROID用戶的反饋信息我們可以得出一個結論ANDROID應用程序權限安裝的過程中提供了全面的安裝信息給ANDROID手機用戶，然而ANDROID用戶對這些提供的信息往往是不怎么在意或者忽略。

簡介：ADSPBASEDPLATFORMFORRAPIDPROTOTYPINGOFREALTIMEIMAGEPROCESSINGSYSTEMSVGEMIGNANI,FFAITA,MGIANNONI,ABENASSICNR,INSTILUTEQFCLINICALPHYSIO/ORY,PISA,ITALYGEMIFCCNRITABSTRACT7HISPAPERJILESENTSANEMBEDDEDBOARDJIJL“RAPIDPROF{?VPIJIROFREULTIMEIMAGEPROCESSINGO/GORITHMSTHEP/A/IJL“L1ISHOSED{/1TLTETEXASL/1S/RUMENTSTMS320C6415,ANEWDIR,I/ALSIKLLALPROCESSORDESIGNED/INHGHPEL/I/MANEEAPPLICATIONSANYANA/OKVIDEOSOURCE,SLIEHOSACAMCORDEROR/VCRCANHEUSEDASUNILLPUTSIGNALTHEIMAGESARCCAPTURED,PROCESSEDINREA/TIMEANDTHENDISPLAYEDIN{/WINDOWO/AR/“{/PHIMLLISERINLEL/HEEBOTH{/MOUSEAND{/KEYHOARDAREAVAI/AHLE10INTERAE/WITHTHESYSLEMASOJIWAREENVIRONMENTISA/SOPROVIDEDTHUSALLOWINKTHERAPIDIMPLEMENTATION?/THEALGORI/HMSINHIGHLEVELLANRUAGETHISWORKWASPARTIALLYSLIPPORTEDBYESOATESPAFLONNCE,TALY1INTRODUCTIONTHEIMPLEMENTATIONOFREALTIMEIMAGINGALGORITHMSISACHALLENGINGTASKWHENDEALINGWITHOLNINEAPPLICATIONS,STANDARDWORKSTATIONSARCCOMMONLYLLSED,WHERCPOWERFULSOHWARETOOLSARCAVAILAHLE,THANKSTOWHICHIMAGEPROCESSINGPROCEDURESCANBEEASILYDCVCLOPEDTHEALGORITHMSAREIMPLEMENTEDINHIGHLEVELLANGUAGEANDAFLEXIBLEGRAPHICALLISCRINTERL?LCEGUICANBEUSEDTOINTERACTWITHTHESYSTEMANDTODISPLILYTHERESULTSMOREOVER,SUCHSYSTEMSMAINTAINTHEIRCOMPATIBILITYWITHOLDERVELSIONS,SOTHESOJLWARCCANBEEASILYREIMPLEMENTEDASSOONASANEW,FASTERPLATFORMISAVAILABLEUNERTUNATELY,ASOLUTIONBASED011ASTANDARDWORKSTATIONISOILCNUNSUITABLEFORREALTIMCIMAGING11INREECNTYEARS,SEVERALSPECIALHARDWAREPLATFORMSHAVEBEENDEVELOPEDTOMEETTHEREQUIREMENTSOFREAL-TIMEIMAGINGLLIGHLYCUSTOMIZEDSYSTEMSREQUIRETHEDESIGNOFHEARCHITECTUREATTHEINTEGRATEDCIRCUITLCLEVELL2JINGENERAL,SUCHSOLUTIONSPROVIDETHEBESTPERLLJRMANCESBUTHAVETWODRAWBACKSITHEIRILCKORILEXIHILITYASTHEICGARCDESIGNEDTOPERFORMONLYSPEEILICELABORATIONSIITHEIRELEVATEDDESIGNCOSTANDLONGTIMETOMARKETWHICHLIMITSLLCHANAPPROACHOILLYTOCRITICALAPPLICATIONSANDTOMASSPRODUCTIONMORCAFFORDABLELINDMOREILEXIBLESOLUTIONSARCBASED011PROGRAMMABLEDEVICES,MAINLYDIGITALSIGNALPROCESSORSDSPSLNDFIELDPROGRAMMABLENATEARRAYSFIGAS3,4,5THEPERLENNANCE/COSTRATIOIHRSUCHDEVICESHASRAPIDLYINCREASEDSOTHEYARCBECOMINGAVALIDALTCRNATIVE0IELEVELDESIGNMOREOVER,THEYALLOWTHEDEVELOPMENT01GENERAL-PURPOSEPROGRAMMABLEPLATFORM8,WHICHCANBEADOPTEDBYSOLLWARCDEVELOPERSTOIMPLEMENTCUSTOMALGORITHMSSULHSOLUTIONSARCWITLDYLISEDWHENRAPIDPROTOTYPINGISREQUIREDACOMMONOBJECTIONTOTHELISEOFCLISTOILLPMGRAL111L1ABLCPLATFORMSISTHATIMPLEMENTINGALGORITHMSMAYBEDIN1CULTASSPEEILIEKNOWLEDGEOFTHEHARDWAREINLISEISNECESSARYSYSTEMSBASEDONPROGRAMMABLELOGICS,SLLEHASFPGA,MLLSTBEPROGRAMMEDILLAHARDWAREDESCRIPTIONIANGLLAG?IIDLTHEAPPROACHISQUITEDIFFERENTFROMTHESOHWARESOLUTIONLISEDINWORKSTATIONSASITCOVERSASPECTS01“HARDWAREDESIGNINSYSTEMSBASED011MICROPROCESSORS,SUCHASIJSPS,THETASKISSLIGHTLYEASIERSINEEITISSTILLBASEDONASORTWAREAPPROACHFURTHERMORE,MODERNEOTNPILERSALLOWAHIGHLEVELLANGUAGETOBEUSEDTOOBTAINOPTIMIZEDCODEIMPLCMENTATIONS,CVENTHOUGH,WHENTILLHIGHESTLEVELOFOPTIMIZATIONISREQUIRED,THEALGORITHMMUSTSTILLBEWRITTENINHANDCOCKDASSEMBLERSOTHEWORKHECOMESFARILLOREDIFFICULTNONETBELESS,COMPILERSALLOWASOHWAREENGINEERTOEASILYACHIEVEAGOODOPTIMIZATIONLEVELOFTHECODEANOTHCRLIMITATION,WHICHISCOMMONTOBOTHFPGI\HASEDANDDSPHASEDEMBEDDEDSYSTEMS,ISTHELACKOFAGOODUSERINTERFACESEVERALVIDEOIMAGINGAPPLICATIONSRCQUICUSERINTERACTIONSOAAUISHOULDBEPROVIDEDTHESYSTEMPRESENTEDINTHISPAPCRWASDESIGNEDTOOVERCOMETHEABOVEMENTIONEDLIMITATIONSPROVIDINGIANEMBEDDEDDEVICETHATHASBOTHPROCESSINGPOWERANDAILEXIHLEGUIIIASOTLWAREENVIRONMENTINWHICHADEVELOPERCANEASIIYIMPLEMENTIMAGC-PROCESSINGALGORITHMSTHEAPPARATUSISASTANDALONEBOARDABLETOCAPTURE,PROCESSANDPLAYBACKVIDEOSIGNALSINREA1TIMETHEINPUTSECTIONCANCAPTUREAVIDEOSIGNALFROMANANALOGSOURCC,SUCHASACAMCORDERORAVCR,INBOTHMONOCHROMATICANDCOLORMODESTHEDATAARCTHENPROCESSEDBYAHIGHPERFORMANCEDIGITALSIGNALPROCESSOR,WHICHALLOWSTHESYSTEMTOEXECUTEINREALTIMECOMPLEXIMAGINGALGORITHMSTHEVIDEOOUTPUTISDISPLAYEDINAGUIANDBOTHAMOLLSEANDAKEYBOARDARCAVAILAHLE10INTERACTWITHTHESYSTEMASOFTWAREENVIRONMENTISALSOPROCEEDINGSOFTHE3RDINLERNATIONALSYMPOSIUMONIMAGEANDSIGNALPROCESSINGLLLDI\NTLYSIS2003936WITHALARGEAMOUNTOFOFFTHESHELFDEVICES,SUCHASMICE,KEYBOARDS,HARDDRIVES,ETCFINALLY,ACONFIGURABLERS232SERIALPORTANDAJTAGCONNECTIONAREPRESENT3SOFTWAREENVIRONMENTWITHTHEAIDOFTHEINTEGRATEDDEVELOPMENTENVIRONMENTCODECOMPOSERSTUDIO7,SUPPLIEDBYTEXASINSTRUMENTS,ASOFTWAREPLATFORMWASARRANGEDFORRAPIDPROTOTYPINGOFREALTIMEVIDEOALGORITHMSTHEENVIRONMENTISBASEDONDSP/BIOS,ASCALABLEREAL?TIMEKERNELDESIGNEDSPECIFICALLYFORTHEDSPPLATFORMWEUSEDAMULTITHREADINGSTRUCTUREWITHPRE?EMPTIVESCHEDULINGWASIMPLEMENTEDBYSIMPLYADDINGASINGLETHREAD,WHICHHASALREADYBEENOPTIMIZEDASREGARDSTHEPRIORITYOFEXECUTION,THEUSERCODECANBEINTEGRATEDWITHTHEENVIRONMENT2LIBRARIESDPS/BIOSEMBEDDEDBOARDTMS320C6415FIGURE2THESOFTWAREENVIRONMENTTHREEMODULESWEREINTEGRATEDINTLIEKERNELFIGUREIINITIALIZATIONOFTHEONBOARDSDEVICESIIDRIVERSIIISCHEDULINGOFTHETHREADSTHEINITIALIZATIONMODULECONTAINSTHEROUTINESWHICHSETUPALLTHEDEVICESPRESENTONTHEBOARDITRUNSJUSTONCEATTHESYSTEMSTARTUP,INITIALIZINGTHEVIDEODECODER,THEUSBHOSTCONTROLLER,THEFPGA,THEGRAPHICSPROCESSOR,THEANALOGI/OSUBSYSTEM,ASWELLASALLTHEDSPONCHIPPERIPHERALSTIMERS,EXTERNALMEMORYINTERFACES,PCR,EDMAANDSERIALPORTSTHEDRIVERMODULECONTAINSTHEROUTINESWHICHMANAGETHEPERIPHERALSACTIVITIESATRUNTIMEFOREXAMPLE,THISMODULECONTROLSTHEMOUSEMOVEMENT,THEVIDEODATACAPTURE,THEVIDEODATADISPLAYASWELLASTHEANALOGSIGNALSDATA1/0THESCHEDULINGMODULEMANAGESTHEREALTIMEEXECUTIONSOFTHETHREADSMOSTOFTHETHREADSAREDEFINEDINTHEDRIVERMODULEAFURTHERTHREADISAVAILABLEFORTHEUSERCODETHETHREEMODULESALSOIMPLEMENTTHEDATAFLOW,WHICHISSCHEMATICALLYDEPICTEDINFIGURE3THEMETHODUSEDISBASEDONADOUBLEBUFFERINGSCHEMEONEBUFFERCAPTUREBUFFERISUSEDTOACQUIRETHECURRENTFRAMEWHILEASECONDBUFFERPROCESSINGBUFFERCONTAINSTHEPREVIOUSFRAMEWHICHISMADEAVAILABLETOTHEUSERFORELABORATIONBOTHOFTHESEBUFFERSAREPLACEDINTHEINTERNALMEMORYOFTHEDSPTHEDATACAPTUREDBYTHEVIDEODECODERARETEMPORARILYSTOREDINTHEFIFOMEMORY,ASSEENINFIGURE3WHENALINEOFTHEIMAGEISPRESENTINTHEMEMORY,THEDATAAREMOVEDTOTHECAPTUREBUFFERBYAOMATRANSFEROMA_TONCEALLTHELINESHAVEBEENMOVEDTOTHECURRENTFRAME,THATIS,WHENONEINIAGEISCOMPLETE,THEBUFFERSSWITCHANDTHEUSERCODEISRUNONTHENEWDATATHEUSERCODEPROCESSESTHEDATAANDRETURNSTHEMINTHEOUTPUTBUFFER,WHICHCANBEALLOCATEDANYWHEREINTHEMEMORYON?CHIP,SBSRAM,SDRAMTHEOUTPUTDATAARETHENCONVERTEDINTOTHEVIDEOOUTPUTFORMATANDMOVEDTOTHEVIDEOBUFFER,LOCATEDINTHESBSRAM,BYADMATRANSFERDMA_2FINALLY,THEDATAAREMOVEDTOTHEPLAYBACKBUFFEROFTHEGRAPHICSPROCESSORTHROUGHTHEPCLBUSONCHIPMEMORYCAPTUREBUFFERPROCESSINGBUFFERONCHIPISBSRAMSDRAMMEMORYOUTPUTBUFFERVIDEOBUFFERVIDEOOUTPUTFIGURE3VIDEODATAFLOWTHESOFTWAREENVIRONMENTWASARRANGEDSOTHATBOTHLTHETHREADSCHEDULINGANDTHEDATAFLOWMANAGEMENTARETRANSPARENTTOTHEUSEROURAIMWASTOALLOWASOFTWAREENGINEERTOIMPLEMENTTHEALGORITHMSWITHOUTDEALINGWITHALLTHEPROBLEMSRELATEDTOTHEMANAGEMENTOFTHEHARDWAREANDTOTHEREALTIMEEXECUTIONALLTHEUSERHASTODOISTOTHINKOFTHEALGORITHMINC,WRITEANDLINKTHECODETOTHESOFTWAREPLATFORMANDTHENPROGRAMTHEBOARDBYUSINGTHEJTAGPORT4RESULTSANDFUTUREWORKTHESYSTEMWASTESTEDUSINGACAMCORDERASANINPUTVIDEOSOURCEFIGURE4THEIMAGESWEREACQUIREDWITHARESOLUTIONOF512X512PIXELS,8BIT/PIXEL,25FRAME/SEC,AFILTERINGOPERATIONWASCARRIEDOUT,THOTHERESULTWASDISPLAYEDINAWINDOWOFTHEGUIFIGUREPROCISPA03938

簡介：畢業(yè)設計（論文）外文資料翻譯畢業(yè)設計（論文）外文資料翻譯系部計算機科學與技術系專業(yè)計算機科學與技術（專升本）姓名學號外文出處IEEEINTERNATIONALCONFERENCEONCOMPUTERANDINFORMATIONTECHNOLOGY指導老師評語指導老師評語簽名年月日一個權限的難題ANDROID智能手機上安裝應用程序的權限2就必須花費25的手續(xù)費來開通自己的個人賬號，通過上傳自己的應用程序軟件，并從中獲取利潤。當然，ANDROID市場是不會去檢查你的應用程序到底包含哪些基本信息。然而，這對ANDROID用戶是非常不利的。對此谷歌來完成這項保護ANDROID手機用戶的任務。通過調查我們提供給ANDROID用戶兩種安裝選擇。1你是否愿意安裝此軟件到你的手機上2你是否信任開發(fā)商去訪問你的個人信息通過我們的走訪調查可知，大部分的ANDROID手機用戶都希望應用程序提供詳細的權限安裝問題，并表示這是對于手機安全性的一個必不可少的環(huán)節(jié)。ANDROID用戶還提出應該由用戶自己選擇什么時候彈出權限消息提示框，這樣做的目的是為了減少給客戶到來不必要的麻煩。2相關工作相關工作雖然ANDROID手機僅僅只是在2008年發(fā)布后的不久誕生的，但是有一個重要的工作需要我們去完成的，那就是學習ANDROID手機的權限安全性問題。提出這個重要的理論依是根據對ANDROID手機運行的安全性或者提高系統(tǒng)的安全性能出發(fā)的。EYCK的相關的工作主要是研究ANDROID系統(tǒng)的安全性和面向用戶權限之間的差異化，重點分析在ANDROID用戶關閉手機的時候，通過權限請求消息與手機之間建立通信功能。VIDA的主要工作是研究如何讓ANDROID應用程序接受請求權限，通過研究后來發(fā)現(xiàn)，權限存在一個“權限危機”的現(xiàn)象。由于ANDROID提供的API文檔接口與用戶實際接受的應用程序請求消息無法建立連接，所以這就是開發(fā)人員現(xiàn)在面臨的一個主要難題。FELT主要工作是揭秘ANDROID權限的工作原理，試圖進一步解釋權限的開發(fā)商為什么要怎么開發(fā)。然而，無論是最終用戶探討這些應用程序權限的理解。在我們的工作調查中發(fā)現(xiàn)雖然ANDROID手機用戶明明知道安裝一個應用程序可能存在風險或者病毒，但是還是有很多ANDROID用戶試圖為自己找借口忽略這些安裝權限消息提示框，常常抱怨為什么安裝一個應用程序軟件要怎么多麻煩的權限消息提示框。另一些人看待ANDROID應用程序權限問題的態(tài)度是試圖去簡化應用程序權限的安裝過程或者跟其他智能手機對比安裝權限的過程。通過ANDROID用戶的反饋信息我們可以得出一個結論ANDROID應用程序權限安裝的過程中提供了全面的安裝信息給ANDROID手機用戶，然而ANDROID用戶對這些提供的信息往往是不怎么在意或者忽略。

簡介：此文檔是畢業(yè)設計外文翻譯成品（含英文原文中文翻譯），無需調整復雜的格式下載之后直接可用，方便快捷本文價格不貴,也就幾十塊錢一輩子也就一次的事外文標題LIBRARYACCESSSYSTEMSMARTPHONEAPPLICATIONUSINGANDROID外文作者BURAQSADEQJAAFAR,ARATINIMGAONKAR文獻出處INTERNATIONALJOURNALOFINNOVATIVERESEARCHINSCIENCE,ENGINEERINGANDTECHNOLOGY,VOL6,ISSUE10,OCTOBER2018如覺得年份太老，可改為近2年，畢竟很多畢業(yè)生都這樣做英文2217單詞，14440字符字符就是印刷符，中文3772漢字。（如果字數多了，可自行刪減，大多數學校都是要求選取外文的一部分內容進行翻譯的。）LIBRARYACCESSSYSTEMSMARTPHONEAPPLICATIONUSINGANDROIDABSTRACTANDROIDPLATFORMHASBECOMEMOREPOPULARANDITHOLDSAMAXIMUMNUMBEROFUSERSWHENCOMPAREDTOALLOTHERPLATFORMBEFORETHEINTRODUCTIONOFTHEANDROIDOPERATINGSYSTEMTHEACCESSTOTHELIBRARYDOCUMENTSWASDONEONLYBYTHELIBRARIANTHISPAPERSUGGESTSAMETHODFORTHELIBRARYACCESSTOGOPUBLICTHATISTHEPUBLICCANALSOACCESSTHELIBRARYDATABASETHELIBRARYACCESSAPPLICATIONHELPSTHEPATRONSTOACCESSTHEIRREQUIREDINFORMATIONANDQUERIESWITHOUTCOMPUTERSORTHELIBRARIANSBUTTHROUGHTHEIRANDROIDDEVICESWHICHSAVESTHEIRTIMEANDENERGYTHEAPPLICATIONRETRIEVESTHEINFORMATIONSTOREDINTHELIBRARYDATABASETHROUGHTHELIBRARYSERVERFOREXAMPLECHECKINGWHETHERTHEBOOKSAREAVAILABLEINTHELIBRARYORBORROWEDWITHOUTINTERVENINGANYONEUSER’SACCESSOFLIBRARYWILLBESTOREDINTHEDATABASEFORSUGGESTIONDURINGASEARCHFORBOOKSDUEDATEOFTHEBORROWEDBOOKSFROMALIBRARYWILLBEINTIMATEDBYTHEAPPASANOTIFICATIONPRIORTOTHEDEADLINEUSERSAREPRIVILEGEDTOSUGGESTBOOKSFORTHELIBRARYANDTHEYARENOTIFIEDABOUTTHEIRSUGGESTION,BYTHELIBRARIANTHISPAPERBRINGSANEWIDEAOFTHEPUBLICTOACCESSTHELIBRARYKEYWORDSANDROIDOPERATINGSYSTEM,SQLITEDATABASE,LIBRARYACCESSSOFTWARECOMPONENTSSUCHASLIBRARIES,LINUXKERNEL,ANDROIDRUNTIME,APPLICATIONFRAMEWORKANDAPPLICATIONSLAYERWHERETHEUSERCANINTERACTWITHAPPLICATIONSLIKECONTACTS,PHONE,BROWSERANDSOON3IIRELATEDWORKTHEREARESEVERALCONCEPTSHASBEENMADEFORLIBRARYMANAGEMENTBUTTHISWORKMADEOURTASKEASIERSOMEOFTHEOTHERRELATEDWORKTHATISAVAILABLETODEVELOPFORMANAGINGTHELIBRARYASHUTOSHPROPOSEDACONCEPTCALLEDONLINELIBRARYMANAGEMENTSYSTEMITDEVELOP“LIBRARYMANAGEMENTSYSTEM“ISINJAVAWHICHMAINLYFOCUSESONBASICOPERATIONSINALIBRARYLIKEADDINGNEWBOOKS,NEWMEMBER,SEARCHINGBOOKS,UPDATINGNEWINFORMATION,ANDMEMBERSAREFACILITATEDTOBORROWANDRETURNBOOKS12RFIDBASEDLIBRARYMANAGEMENTSYSTEM13USINGMATLABCONTRIBUTESTHEIRWORKBASEDONTHEEMERGINGTECHNOLOGYCALLEDRADIOFREQUENCYIDENTIFICATIONTHISSYSTEMISBASEDONHIGHFREQUENCYDLPRFID1READ/WRITERHAVINGTHERANGEOFFREQUENCYIS1356MHZTHESOFTWAREISWRITTENINMATLABANDMYSQLTOIMPROVESYSTEMPERFORMANCELIBRAMATICISALIBRARYMANAGEMENTSYSTEMBASEDONCLOUDTECHNOLOGYITWASOFFICIALLYLAUNCHEDONJULY2012ATDUBLIN,WHICHALLOWSTHELIBRARIANTOCATALOGUETHEBOOKSAVAILABLEBYSCANNINGAISBNCODEBYTHEMEANSOFANSMARTPHONECAMERAORUSBBARCODEREADERORPERSONALCOMPUTER17INVENIOISOPENSOURCESOFTWAREDEVELOPEDBYCERNIN2002WHICHHASANINBUILTTOOLUSEDTOMANAGEDIGITALASSETSINANINSTITUTIONALREPOSITORY,ITISAWEBBASEDAPPLICATIONWRITTENINPYTHONPROGRAMMINGLANGUAGE18NEWGENLIBISOPENSOURCESOFTWAREDEVELOPEDBYVERUSSOLUTIONINMARCH2015ITISANINTEGRATEDLIBRARYMANAGEMENTSYSTEMWHICHRUNSONLINUXANDWINDOWS

簡介：此文檔是畢業(yè)設計外文翻譯成品（含英文原文中文翻譯），無需調整復雜的格式下載之后直接可用，方便快捷本文價格不貴,也就幾十塊錢一輩子也就一次的事外文標題APPINTERFACESTUDYONHOWTOIMPROVEUSEREXPERIENCE外文作者JINSHENGLU,QINGCHEN,XIJINGCHEN文獻出處THE7THINTERNATIONALCONFERENCEONCOMPUTERSCIENCEUSEREXPERIENCETHINKINGMODEINTERACTIVEMODEVISUALMODEIINTRODUCTIONACONVERSIONOFTHINKINGMODE1MEETANDCREATENEEDSPEOPLECANBEDIVIDEDINTOTHREEGROUPSNONDIRECTIONAL,EXPLORINGTYPEANDDIRECTIONALTYPE8APPSHOULDNOTONLYMEETNEEDSOFDIRECTIONALGROUP,BUTALSOCREATENEEDS,THUSMAKINGITBECOMETHETARGETVISIONTOEXPLORINGGROUPANDNODIRECTIONGROUPWHENUSERSFINDANDDOWNLOADANAPP,THEYWILLFEELLIKEFINDINGALOVER,FULLOFLONGINGANDJOYATLEASTITSHOULDBEAPARTNERTHATTHEUSERISWILLINGTOCOOPERATEWITH2MAKEAPPCLOSERTOPEOPLE’STHOUGHTSANDBEHAVIORTHEINTERFACEDESIGNOFAPPSHOULDGETCLOSETOPEOPLE’SBEHAVIOR,CHARACTER,ANDBEMORETOLERATINGUNLESSTHEBEHAVIORCAUSESLEGALPROBLEM,TENTATIVEOPERATIONSHOULDCAUSENOMENTALPRESSURETRYTOGUESSANDANALYSISUSER’SBEHAVIOR,ANDPROVIDETHERIGHTTHINGINTHERIGHTPLACE3PROVIDEPEOPLEWITHASENSEOFPLAYINGDESIGNERSSHOULDDECREASETHELOGICALTHINKINGASMUCHASPOSSIBLEWHENPEOPLEUSETHEAPPITISGOODIFUSERSFEELRELAXEDWHENTHEYUSETHEAPPTHEYGETWHATTHEYWANT,ANDFINISHTHEWORKEFFICIENTLYTHEINTERFACEMAYSHOWTHENEEDEDFUNCTIONANDINFORMATION,RELEASEUSERS’WORKOFJUDGINGANDCHOOSING,LEAVINGTHECOMPLICATEDTHINKINGPROCESSTODESIGNERSANDENGINEERSITWILLBEEVENBETTERIFTHEPROCESSISJUSTLIKEPLAYINGGAMESLETUSERSHAVEASENSEOFFUNORACHIEVEMENT4FOCUSONPREFERENCESEACHUSERGROUPHASTHEIROWNPREFERENCEEACHUSERISUNIQUEITWILLBEGREATIFEVERYUSERFEELSASIFITWERELIKEHISOWNSUSERSHAVETHERIGHTTOCHANGETHESETTINGSUSERSARENOLONGERPASSIVERATHER,THEYBECOMEACTIVECONTROLLERSTHUSTHEPSYCHOLOGYFEELINGINTHEPROCESSWILLBEDIFFERENT,ANDUSERSWILLPREFERTOUSEITMORE

簡介：HIGHPERFORMANCEPOWERSPECTRUMANALYSISUSINGAFPGABASEDRECONFIGURABLECOMPUTINGPLATFORMYOGINDRAABHYANKAR,SAJISHC,YOGESHAGARWALHARDWARETECHNOLOGYDEVELOPMENTGROUPCENTREFORDEVELOPMENTOFADVANCEDCOMPUTINGPUNE411007,INDIAYOGINDRACDACINCRSUBRAHMANYA,PEEYUSHPRASADDEPARTMENTOFASTRONOMYANDASTROPHYSICSRAMANRESEARCHINSTITUTEBANGALORE560080,INDIACRSRRIRESINABSTRACTPOWERSPECTRUMANALYSISISANIMPORTANTTOOLPROVIDINGCRITICALINFORMATIONABOUTASIGNALTHERANGEOFAPPLICATIONSINCLUDESCOMMUNICATIONSYSTEMSTODNASEQUENCINGIFTHEREISINTERFERENCEPRESENTONATRANSMITTEDSIGNAL,ITCOULDBEDUETOANATURALCAUSEORSUPERIMPOSEDFORCEFULLYINTHELATTERCASE,ITSEARLYDETECTIONANDANALYSISBECOMESIMPORTANTINSUCHSITUATIONSHAVINGASMALLOBSERVATIONWINDOW,AQUICKLOOKATPOWERSPECTRUMCANREVEALAGREATDEALOFINFORMATION,INCLUDINGFREQUENCYANDSOURCEOFINTERFERENCEINTHISPAPER,WEPRESENTOURDESIGNOFAFPGABASEDRECONFIGURABLEPLATFORMFORHIGHPERFORMANCEPOWERSPECTRUMANALYSISTHISALLOWSFORTHEREALTIMEDATAACQUISITIONANDPROCESSINGOFSAMPLESOFTHEINCOMINGSIGNALINASMALLTIMEFRAMETHEPROCESSINGCONSISTSOFCOMPUTATIONOFPOWER,ITSAVERAGEANDPEAK,OVERASETOFINPUTVALUESTHISPLATFORMSUSTAINSSIMULTANEOUSDATASTREAMSONEACHOFTHEFOURINPUTCHANNELS1INTRODUCTIONTHECONCEPTANDUSEOFPOWERSPECTRUMOFASIGNALISFUNDAMENTALINENGINEERINGINCOMMUNICATIONSYSTEMS,MICROWAVEANDRADARSRECENTLY,ITISALSOBEINGUSEDINDIVERSEAPPLICATIONSSUCHASGENEIDENTIFICATIONINATYPICALTRANSMITRECEIVESYSTEM,IFTHERECEIVEDSIGNALISPUREANDASEXPECTED,NOFILTERINGISREQUIREDHOWEVER,ONTHEOTHERHAND,ANYINTERFERENCEOVERRIDINGTHERECEIVEDSIGNALMAYREQUIRECERTAINANALYSISINORDERTOKNOWMOREABOUTTHEINTERFERENCEASTHEINTERFERENCETENDSTOPUMPADDITIONALPOWERINTHERECEIVEDWAVES,THEPOWERBECOMESAUSEFULCRITERIONFORSUCHANANALYSISUSINGTHEREVERSEENGINEERINGTECHNIQUES,THEEXCESSPOWERINFORMATIONWITHTHEINCOMINGSIGNALMAYHELPINFINDINGTHECHARACTERISTICSOFTHEINTERFACESUCHASFREQUENCY,SOURCEETCAPOWERSPECTRUM5ISAREPRESENTATIONOFTHEMAGNITUDEOFTHEVARIOUSFREQUENCYCOMPONENTSOFASIGNALBYLOOKINGATTHESPECTRUM,ONECANFINDHOWMUCHENERGYORPOWERISCONTAINEDINTHEFREQUENCYCOMPONENTSOFTHESIGNALANALYSISOREVALUATIONOFTHEPOWERSPECTRUMISONEOFTHEWAYSOFISOLATINGNOISETHEREAREACOUPLEOFTECHNIQUESFORGENERATINGTHEPOWERSPECTRUMTHEMOSTCOMMONONEISBYUSINGTHEFOURIERTRANSFORM6THEOTHERTECHNIQUESSUCHASTHEWAVELETTRANSFORMORTHEMAXIMUMENTROPYMETHODCANALSOBEUSEDEXPERIMENTALLY,POWERSPECTRUMCANBEDETERMINEDINTHREEWAYS1USINGASPECTRUMORSIGNALANALYZERACOMMERCIALINSTRUMENT2DEDICATEDFORDISPLAYINGTHEREALTIMEPOWERSPECTRA2USINGAMICROCOMPUTERBASEDADDONSIGNALANALYZERCARD,OR3BYDIGITIZINGEXPERIMENTALDATAANDPERFORMINGAFASTFOURIERTRANSFORMFFTONADESKTOPMACHINEINTERMSOFCOSTANDCOMPLEXITY,THEABOVEMENTIONEDTHREEOPTIONSAREINTHEDESCENDINGORDER,WHILECONSIDERINGTHEFLEXIBILITY,THEYAREINTHEASCENDINGORDERDEDICATEDANALYZERSARESOMETIMESUSED,HOWEVERTHEYMAYNOTBECOSTEFFECTIVE,FLEXIBLEORCOMPETENTENOUGH,TOEXTRACTTHEINTERFERENCERELATEDINFORMATIONWHENTHEOBSERVATIONWINDOWISSHORTINGENERAL,THESECONDOPTIONPROVIDESADDITIONALFLEXIBILITY,ESPECIALLYWHENTHEFIELDPROGRAMMABLEGATEARRAYFPGAISUSEDINTHISPAPERWEPRESENTOURDESIGNOFAVERYPOWERFULRECONFIGURABLECOMPUTINGBASEDDESIGNFORSOLVINGCOMPLEXSIGNALFUNCTIONSANDREALTIMEANALYSISALTHOUGHTHISWORKSASANADDONCARDFORAWORKSTATION,ITISEXTREMELYPOWERFUL,FLEXIBLEANDRELATIVELYCOSTEFFECTIVETHEPOWERSPECTRUMANALYSISUSESMODULESDEVELOPEDBYUSFORMULTICHANNELDATAACQUISITIONANDSEVERALSIGNALPROCESSINGOPERATIONSPERFORMEDSIMULTANEOUSLYONFOURDATACHANNELS1424406900/06/2000?2006IEEEFIGURE2POWERSPECTRUMANALYZERIMPLEMENTEDONCOMPUTEFPGAHOSTPERFORMSPOSTPROCESSINGANDOTHEROPERATIONSONTHEPROCESSEDDATAGENERATEDBYTHERCTHISISREQUIREDTOCOMPLETETHEPOWERSPECTRUMANALYSISASSHOWNINFIGURE1,THEINPUTLVDSDATASTREAMSAREHANDLEDBYTHEONBOARDRECEIVERSTOPROVIDECOMPATIBLESIGNALSFORTHECOMPUTEENGINETHEPOWERSPECTRUMCOMPUTATIONBLOCKTHATRESIDESINTHEXCV800COMPUTEFPGAISSHOWNINFIGURE2ITCONSISTSOFSIXMAINCOMPONENTSINPUTSAMPLERANDBUFFERS,MULTICHANNELFFTUNITS,CHANNELSEPARATORANDPOWERCOMPUTATIONUNIT,AVERAGEANDPEAKPOWERCOMPUTATIONALUNIT,TIMESTAMPINGANDCONTROL,ANDTHEXCV800XCV300INTERFACEINTHEFOLLOWINGSUBSECTIONS,WEDESCRIBETHESECOMPONENTSOFTHEAPPLICATION41INPUTSAMPLERANDBUFFERSTHESPECTRUMANALYZERAPPLICATIONREQUIRESFOURLVDSCHANNELSASINPUTS,EACHHAVINGA4BITDATAWIDTHHOWEVER,THEREAREONLYEIGHTDEDICATEDDIFFERENTIALLINESFORTHECHANNELSTHECHANNELSARETIMEMULTIPLEXEDINPAIRS,IECHANNEL1ANDCHANNEL2GOESONFOURLINES,WHILECHANNEL3ANDCHANNEL4ONTHEREMAININGFOURLINESACLOCK,SERVINGASASTROBEISPROVIDEDTHEDATATOTHESAMPLERUNIT,CHANGESONPOSITIVEANDNEGATIVEEDGESOFTHISCLOCKTHECHANNELMULTIPLEXEDINPUTDATAISPASSEDTOTHESAMPLERUNIT,DEMULTIPLEXEDANDFORWARDEDTOCHANNELBUFFERSASWELLASTOTHEINPUTDATABUFFERSTHEDATAFROMTHECHANNELBUFFERSAREINPUTTOTHEFFTBLOCK,WHILETHEDATAFROMTHEINPUTDATABUFFERSARESTOREDINTHESDRAMTHECHANNELBUFFERINGISNECESSARYTOCOLLECTABLOCKOFDATABEFORETHEFFTCOMPUTATIONBYUSINGBUFFERPAIRSATEACHFFTINPUT,THEDATAISREADANDPROCESSEDBYTHEFFTUNITINPARALLELTOTHEINPUTDATASTREAMEDBYTHEHOSTINTHEOTHERBUFFERWHENTHEFFTCOREFINISHESPROCESSINGTHECURRENTINPUTDATA,THEMEMORYBANKSARESWAPPEDANDTHEDATALOADANDCOMPUTATIONCONTINUESONTHEALTERNATEMEMORYBANK42MULTICHANNELFFTTHISBLOCKUSESTWO,256POINTCOMPLEXFFTUNITSFROMXILINXCOREGENLIBRARY,WORKINGINPARALLELONTHEFOURINPUTDATACHANNELSINSTEADOFUSINGTHEMFORCOMPLEXFFTCOMPUTATIONHAVINGREALANDIMAGINARYINPUTS,THEYAREUSEDFORPROCESSINGTWOREALDATASTREAMSTHEUNITSCALCULATECOMPLEXFFTACCORDINGTOTHEFOLLOWINGEQUATIONXK1256S?XNE?JNK2Π2561WHERE,XNISTHEINPUTSEQUENCEN0,1,2,255XKISTHEOUTPUTSEQUENCEK0,1,2255SISTHESCALINGFACTORADJUSTEDTO1

簡介：9781424417247/08/2500?2008IEEEICALIP2008586VIRTUALARMPLATFORMFOREMBEDDEDSYSTEMDEVELOPERSALEXHEUNHEHAN,YOUNGSIHWANG,YOUNGHOAN,SOJINLEE,KISEOKCHUNGDEPTOFELECTRONICSANDCOMPUTERCOMMUNICATIONSENGINEERING,HANYANGUNIVERSITYALEXHANHANYANGACKRABSTRACTMOREANDMOREEMBEDDEDSYSTEMDEVELOPERSANDSYSTEMONCHIPDESIGNERSREPLYONMICROPROCESSORBASEDDESIGNMETHODOLOGYTOREDUCETIMETOMARKETARMPROCESSORHASBEENAMAJORPLAYERINEMBEDDEDSYSTEMINDUSTRYOVERTHELAST10YEARSHOWEVER,THEREAREMANYRESTRICTIONSONDEVELOPINGEMBEDDEDSOFTWAREUSINGARMPROCESSORINTHEEARLYDESIGNSTAGEFORTHOSEWHOARENOTFAMILIARWITHEMBEDDEDSOFTWAREEQUIPMENT,TESTINGTHEIRSOFTWAREONAREALARMHARDWAREPLATFORMISACHALLENGINGJOBTOOVERCOMESUCHAPROBLEM,WEHAVEDESIGNEDVIRTUALARMPLATFORM,WHICHOFFERSEASIERTESTINGANDDEBUGGINGENVIRONMENTTOARMBASEDEMBEDDEDSYSTEMDEVELOPERSMAJORBENEFITSTHATCANBEACHIEVEDBYUTILIZINGAVIRTUALARMPLATFORMARE1REDUCINGDEVELOPMENTCOST,2LOWERINGTHEENTRANCEBARRIERFOREMBEDDEDSYSTEMNOVICES,AND3MAKINGITEASIERTOTESTANDDEBUGEMBEDDEDSOFTWAREDESIGNSUNLIKEMANYOTHERPURELYSOFTWAREORIENTEDARMSIMULATORSWHICHAREINDEPENDENTOFREALHARDWAREPLATFORMS,OURPROPOSEDVIRTUALARMPLATFORMISSPECIFICALLYTARGETEDONSYSLAB5000ARMHARDWAREPLATFORM,DESIGNEDBYLIBERTRON,INC,WHICHMEANSTHATVIRTUALARMPLATFORMIMITATESBEHAVIORSOFEMBEDDEDSOFTWAREASIFTHESOFTWAREISRUNNINGONTHETARGETEMBEDDEDHARDWAREASCLOSELYASPOSSIBLETHISPAPERSHOWSHOWVIRTUALARMPLATFORMISDESIGNEDANDHOWITCANBEUSEDTOREDUCEDESIGNTIMEANDCOST1INTRODUCTIONANEMBEDDEDSYSTEMISASPECIALPURPOSECOMPUTERSYSTEMDESIGNEDTOPERFORMASMALLSETOFDEDICATEDFUNCTIONS,SOMETIMESWITHREALTIMECOMPUTINGCONSTRAINTSITISUSUALLYEMBEDDEDASPARTOFACOMPLETEDEVICEWHICHINCLUDESHARDWAREANDMECHANICALPARTSEMBEDDEDSYSTEMSSPANALLASPECTSOFMODERNLIFEANDEXAMPLESOFTHEIRUSEARENUMEROUSNOTONLYCONSUMERELECTRONICSINCLUDINGPERSONALDIGITALASSISTANTSPDAS,MP3PLAYERS,MOBILEPHONESBUTALSOTELECOMMUNICATIONSSYSTEMS,TRANSPORTATIONSYSTEMS,ANDMEDICALEQUIPMENTSEMPLOYNUMEROUSEMBEDDEDSYSTEMSSUCHASMOBILENETWORKSYSTEM,ANTILOCKBREAKINGSYSTEMABS,GPS,ELECTRONICSTETHOSCOPE1ONEOFTHEMOSTIMPORTANTHARDWARECOMPONENTSOFANEMBEDDEDSYSTEMISMICROPROCESSORMICROPROCESSORHASPLAYEDAMAINROLEINDEVELOPMENTOFITINDUSTRY,ESPECIALLYINPOPULARIZATIONOFPERSONALCOMPUTERPCANDINTERNETEACHMICROPROCESSORHASITSOWNCHARACTERISTICSASITISUSEDINVARIOUSCATEGORIES2ASERIESOFARMPROCESSORSHAVERISCTYPEARCHITECTURES,ANDTHEYHAVEBEENWIDELYUSEDINANUMBEROFEMBEDDEDDESIGNSBECAUSEOFNOTONLYTHEIRHIGHPERFORMANCEANDLOWCOSTBUTALSOPOWERSAVINGFEATURES,ARMVARIANTSAREDOMINANTINALLCORNERSOFCONSUMERELECTRONICS,FROMPORTABLEDEVICESPDAS,MOBILEPHONES,MEDIAPLAYERS,HANDHELDGAMINGUNITS,ANDCALCULATORSTOCOMPUTERPERIPHERALSHARDDRIVES,DESKTOPROUTERSVIRTUALARMPLATFORM,WHICHWEAREGOINGTOPROPOSEINTHISPAPER,ISANARMSIMULATORDESIGNEDCONSIDERINGTARGETHARDWAREINCONTRASTTOOTHERVIRTUALARMMACHINESTHATHAVEBEENDESIGNEDONLYINSOFTWAREMODEL,OURVIRTUALARMPLATFORMENABLESMOSTSIMILAROPERATIONSTOTARGETEMBEDDEDSYSTEMBY“SIMILAROPERATIONS”,WEMEANTHATOURVIRTUALARMPLATFORMALLOWSEMBEDDEDSYSTEMDEVELOPERSTODEVELOPANDTESTTHEIREMBEDDEDAPPLICATIONASIFTHEYDOONAREALH/WPLATFORMTOIMPLEMENTATARGETSPECIFICVIRTUALARMPLATFORM,WEHAVECHOSENSYSLAB5000ARMHARDWAREPLATFORM,DESIGNEDBYLIBERTRON,INC,ASOURTARGETH/WPLATFORMSINCEATARGETSPECIFICVIRTUALPLATFORMALLOWSTHETARGETPLATFORMSPECIFICDETAILSTOBETESTEDWITHOUTTHEREALTARGETPLATFORM,DESIGNTIMEANDCOSTCANBEGREATLYREDUCEDESPECIALLY,FOREDUCATIONALINSTITUTIONSWHEREASUFFICIENTNUMBEROFEMBEDDEDEQUIPMENTSARENOTDEPLOYED,THISTYPEOFTARGETSPECIFICVIRTUALPLATFORMWILLBEGREATLYHELPFULTOTEACHSTUDENTSHOWTODESIGNATARGETSPECIFICEMBEDDEDSYSTEMWHILEMINIMALLYREQUIRINGTHETIMETOUSETHEREALHARDWAREOURVIRTUALARMPLATFORMIMPLEMENTATIONISBASEDONARMAUTHORIZEDLICENSEDUSELIMITEDTOZHENGZHOUUNIVERSITYDOWNLOADEDONFEBRUARY25,2009AT0515FROMIEEEXPLORERESTRICTIONSAPPLY588FIGURE3EXECUTIONOFFIRMWARELEVELCODEINSIMITARMANDH/WARMPLATFORM3RELATEDWORKRECENTLY,MANYDIFFERENTAPPROACHESHAVESTUDIEDVIRTUALTOOLFORVERIFICATIONOFEMBEDDEDSOFTWAREINHOSTPCINTHISSECTION,WEBRIEFLYSUMMARIZESOMEOFTHEMASONEOFTHEMOSTWELLKNOWNSIMULATORSFORARM,ARMULATOR5CANBEUSEDTOPROVIDEVIRTUALPROTOTYPINGENVIRONMENTFOREMBEDDEDSYSTEMDEVELOPMENTBYVIRTUALLYIMPLEMENTINGHARDWAREIPANDPORTINGANOSSUCHASΜC/OSII6ONARMULATOR,ITISPOSSIBLETOCARRYOUTSIMULATIONWITHOUTH/WPLATFORMSIMITARM3ISANINSTRUCTIONSETSIMULATORTHATRUNSBOTHSYSTEMLEVELANDUSERLEVELARMPROGRAMSALSO,SIMITARMSUPPORTSTWOPOPULARSIMULATIONSTYLESINTERPRETATIONANDDYNAMICCOMPILEDSIMULATIONBUTASSHOWNINFIGURE3,SIMITARMCANNOTBUILDFIRMWARELEVELEXECUTABLEPROGRAMWITHOUTLINKINGI/OCONTROLCODESWITHCRUNTIMELIBRARYCRT,WHILEHARDWAREPLATFORMLINKSI/OCONTROLCODESWITHITSSTARTUPCODESINCEINITIALIZATIONCODESAREDIFFERENTFOREACHTARGETPLATFORM,DEVELOPERSCAN’TUSETHESAMEEXECUTABLEPROGRAMINAVIRTUALTOOLANDATARGETH/WARMPLATFORMALLTHESEAPPROACHESHAVETRIEDTOOFFERDEVELOPERSTOWRITEASOURCECODE,BUILDANEXECUTABLEPROGRAM,ANDEXECUTEITINTHEHOSTPCBUTUNFORTUNATELY,THESETOOLSCANONLYSIMULATETHEEXECUTABLEFILEFORASPECIFICTARGETMICROPROCESSORSINCEITCANNOTSIMULATETHEEXECUTIONFORTHEWHOLETARGETHARDWAREPLATFORM,THECONTROLOFPERIPHERALDEVICESISIMPOSSIBLE,WHILEIMPOSINGCONSIDERABLELIMITSINCODESIMULATIONSFIGURE4VIRTUALARMPLATFORMOFFERINGCONTROLFORPERIPHERALDEVICES4IMPLEMENTATIONOFVIRTUALARMPLATFORMWEPROPOSEVIRTUALARMPLATFORMTOOFFEREXTENDEDCONTROLFORPERIPHERALDEVICESWHICHCONVENTIONALARMSIMULATORSCANNOTOFFERBYADDINGCONTROLCODESFORPERIPHERALDEVICESTOEXISTINGARMSIMULATORSSUCHASSIMITARMORSIMPLESCALAR,VIRTUALARMPLATFORMCANCONTROLPERIPHERALDEVICESSUCHASLED,7SEGMENT,STEPMOTOR,ETCFIGURE4SHOWSTHEPROCEDUREOFEMBEDDEDSYSTEMDEVELOPMENTUSINGVIRTUALARMPLATFORMTHATOFFERS“TARGETLIKE”CONTROLFORPERIPHERALDEVICESVIRTUALARMPLATFORMCONSISTSOFVIRTUALARMSIMULATOR,GRAPHICUSERINTERFACE,INPUTEVENTHANDLER,TIMER,ANDI/ODEVICEMODELSASFIGURE5SHOWS,WHENVIRTUALARMPLATFORMISSTARTED,ITINITIALIZESGRAPHICUSERINTERFACEENVIRONMENTANDDISPLAYSTHEMAINGUIWINDOWONSCREENTHENVIRTUALARMSIMULATORISEXECUTED,PROCESSINGTHEINSTRUCTIONSINTHEEXECUTABLEFILEANDSENDINGTHERESULTSTOVIRTUALARMPLATFORMWHENVIRTUALARMPLATFORMGETSTHESIMULATIONRESULTSFROMVIRTUALARMSIMULATOR,ITUPDATESITSGUIINCOOPERATIONWITHTHEEXECUTIONREPORTFROMVIRTUALARMSIMULATORWHENINPUTEVENTHANDLERDETECTSANYINPUTEVENTS,ITANALYZESTHEEVENTANDTERMINATESTHEPROGRAMIFTHEEVENTISTHETERMINATIONEVENTIFTHEEVENTISNOTTHETERMINATIONEVENT,THEHANDLERSENDSTHEPROCESSEDINPUTEVENTTOVIRTUALARMSIMULATOR,WHICHSIMULATESTHEINSTRUCTIONSWITHTHETRANSFERREDINPUTDATAAUTHORIZEDLICENSEDUSELIMITEDTOZHENGZHOUUNIVERSITYDOWNLOADEDONFEBRUARY25,2009AT0515FROMIEEEXPLORERESTRICTIONSAPPLY

簡介：ACOMPLETEANDGENERALSOLUTIONTOTHEFORWARDKINEMATICSPROBLEMOFPLATFORMTYPEROBOTICMANIPULATORSXIAOLUNSHIDEPARTMENTOFSYSTEMSENGINEERINGTHECHINESEUNIVERSITYOFHONGKONGABSTRACTINTHISPAPERAGENERALMETHODISPRESENTED,BASEDONTHEDATAOFTHREEPOINTPOSITIONS,VELOCITIESANDACCELERATIONSOFTHEENDEFFECTOR,FORSOLVINGTHEFORWARDKINEMATICSPROBLEMOFANYPLATFORMTYPEMANIPULATOR,INCLUDINGTHE6DOFSTEWARTPLATFORMNUMERICALEXAMPLESAREINCLUDEDTODEMONSTRATETHEAPPLICATIONOFTHEMETHODITISSHOWNTHATTHEEQUATIONSFORTHEFORWARDPOSITIONKINEMATICSAREHIGHLYNONLINEAR,HOWEVER,CLOSEDFORMSOLUTIONSTOTHEFORWARDRATEKINEMATICSANDTHEFORWARDACCELERATIONKINEMATICSCANBEOBTAINEDBYSOLVINGASYSTEMOFLINEAREQUATIONSTHEADVANTAGESOFUSINGADDITIONALPASSIVEJOINTENCODERSISALSODISCUSSED,TOSIMPLIFYTHESOLUTIONOFTHEPOSITIONKINEMATICSPROBLEM,ANDOBTAINAONETOONERELATIONBETWEENTHEACTUATEDJOINTVARIABLESANDTHEENDEFFECTORCONFIGURATIONS1INTRODUCTIONTHEANTHROPOMORPHICOPENCHAINMECHANISMSOFSERIALTYPEINDUSTRIALROBOTARMSHAVEANUMBEROFADVANTAGESSUCHASLONGREACH,LARGEWORKSPACEANDDEXTROUSMANEUVERABILITYHOWEVER,THELOWRIGIDITYOFTHECANTILEVEREDSTRUCTUREOFTHEOPENCHAINMECHANISMISASERIOUSDISADVANTAGE,ANDITISNOTSUITABLEFORHIGHSPEEDORPRECISIONOPERATIONSANALTERNATIVETOTHESERIALTYPEMANIPULATIONDEVICEISTHEPARALLELMECHANISMSUCHASTHESTEWARTPLATFORMLTHEREDUCEDMASSOFTHEMOVINGPARTS,TOGETHERWITHTHESIGNIFICANTLYIMPROVEDENDPOINTSTIFFNESSOFTHETRUSSLIKESTRUCTUREOFTHEPARALLELMECHANISM,RESULTSINHIGHPOSITIONINGACCURACYANDGOODDYNAMICPERFORMANCEAGREATDEALOFRESEARCHWORKHASBEENDONEINTHEAREAOFTHEKINEMATICANALYSISOFPARALLELMANIPULATORSHUNT2,INHISBOOK,SUGGESTEDTHATTHEMANIPULATIONCAPABILITYOFTHEPARALLELMECHANISMBEUTILIZEDINROBOTSANDHELATER3LISTEDANUMBEROFPOSSIBLESTRUCTURESOFPARALLELMECHANISMSSUITABLEFORROBOTICAPPLICATIONSYANGETAL4,FROMTHEKINEMATICPOINTOFVIEW,STUDIEDTHEFEASIBILITYOFAPPLYINGSUCHAMECHANICALDEVICEINROBOTICSFITCHER5PERFORMEDADETAILEDTHEORETICALANDEXPERIMENTALINVESTIGATIONOFRGFENTONDEPARTMENTOFMECHANICALENGINEERINGTHEUNIVERSITYOFTORONTOASTEWARTPLATFORMTYPEMANIPULATORRECENTLY,MOHAMEDETAL6,SUGIMOTO7,SHIETAL8ANDBEHI9RESPECTIVELY,DEVELOPEDCOMPUTATIONALSCHEMESFORSOLVINGTHEINSTANTANEOUSKINEMATICSOFPARALLELMECHANISMS,SUCHASTHESTEWARTPLATFORM,USINGSCREWTHEORY,THECONCEPTOFPARTIALTWIST6ANDOTHERTECHNIQUESLEEETALLOANDWALDRONETALLL,RESPECTIVELY,DEVELOPEDSOLUTIONSTOTHEFORWARDPOSITIONKINEMATICSPROBLEMFORA3DOFINPARALLELACTUATEDMANIPULATOR,ANDAHYBRIDSERIALPARALLELMANIPULATORCONTAININGA3DOFPARALLELMODULENANUAETAL12PRESENTEDASOLUTIONFORTHEFORWARDPOSITIONKINEMATICSOFASPECIALFORMOFTHE6DOFSTEWARTPLATFORMHOWEVER,MOSTOFTHESEMETHODSEITHERINVOLVEALLPASSIVEJOINTVARIABLESANDTHUSTHESOLUTIONPROCEDURESAREVERYCOMPLICATED,ORCANONLYBEAPPLIEDTOCERTAINSIMPLIFIEDVERSIONSOFTHEPLATFORMTYPEMANIPULATORANEFFECTIVE,GENERALANDUNIFIEDSOLUTIONFORTHEFORWARDKINEMATICSPROBLEMOFPLATFORMTYPEMANIPULATORS,INCLUDINGPOSITION,VELOCITYANDACCELERATIONKINEMATICS,ISSTILLUNAVAILABLEATPRESENTINTHISPAPER,AGENERALMETHODISPRESENTEDFORSOLVINGTHEFORWARDKINEMATICSPROBLEMOFPLATFORMTYPEMANIPULATORS,USINGTHEPOSITIONS,VELOCITIES,ANDACCELERATIONSOFTHREEPOINTSOFTHEMOVINGPLATFORMENDEFFECTORTHISMETHODREQUIRESTHESOLUTIONOFONLYAFEWOFTHEPASSIVEJOINTVARIABLESANDTHUSTHEMETHODISCOMPUTATIONALLYEFFICIENT,ANDITSIMPLEMENTATIONISSTRAIGHTFORWARD2FORWARDPOSITIONKINEMATICSLETUSFIRSTCONSIDERA6DOFSTEWARTPLATFORMASSHOWNINFIGURE1THETHREENONCOLLINEARPOINTSOFTHEMOVINGPLATFORMUNDERCONSIDERATIONARE,RESPECTIVELY,PII1,3THECOORDINATESOFTHETHREEPOINTSEXPRESSEDWITHRESPECTTOTHEBASEREFERENCEFRAME0XY2CANBEREPRESENTEDBY10504729B4030001994IEEE3055FIGURE3THETOPVIEWOFASYMMETRIC6DOFPLATFORMSIMILARLY,THEUNITVECTORJREPRESENTINGTHEORIENTATIONOFTHE,YEAXISWITHRESPECTTOTHEBASEFRAMEISTHEUNITVECTORKREPRESENTINGTHEORIENTATIONOFTHEZEAXISWITHRESPECTTOTHEBASE,THEN,CANBEDETERMINEDUSINGTHECROSSPRODUCT24KIXJQSINSINA7IL,QSINPCOSAI7RIANDP,INGENERAL,CONTAINSIXUNKNOWNVARIABLES,AANDPI,WHICHMUSTBEELIMINATEDBEFORETHEPOSITIONANDORIENTATIONOFTHEENDEFFECTORCANACTUALLYBEDETERMINEDTOTHISEND,SIXCONSTRAINTEQUATIONSAREREQUIRED,OFWHICHTHREECANBEOBTAINEDUSINGTHETHREEPOINTVECTORS,PI,POINTSARETHECENTERSOFTHESPHERICDJOINTSCONNECTING43THEOTHERTHREEEXTENDIBLELINKSTOTHEMOVINGPLATFORMR32JTQI3ACOSP1Q2COSPZ2Q3COSP3ASSHOWNINFIGURE23051

簡介：ACONUNDRUMOFPERMISSIONSINSTALLINGAPPLICATIONSONANANDROIDSMARTPHONEPATRICKGAGEKELLEY,SUNNYCONSOLVO2,LORRIEFAITHCRANOR,JAEYEONJUNG1,NORMANSADEH,ANDDAVIDWETHERALL2CARNEGIEMELLON1MICROSOFTRESEARCH2UNIVERSITYOFWASHINGTON{PKELLEY,LORRIE,SADEH}CSCMUEDU,SUNNYCONSOLVOORG,JJUNGMICROSOFTCOM,DJWCSWASHINGTONEDUABSTRACTEACHTIMEAUSERINSTALLSANAPPLICATIONONTHEIRANDROIDPHONETHEYAREPRESENTEDWITHAFULLSCREENOFINFORMATIONDESCRIBINGWHATACCESSTHEYWILLBEGRANTINGTHATAPPLICATIONTHISINFORMATIONISINTENDEDTOHELPTHEMMAKETWOCHOICESWHETHERORNOTTHEYTRUSTTHATTHEAPPLICATIONWILLNOTDAMAGETHESECURITYOFTHEIRDEVICEANDWHETHERORNOTTHEYAREWILLINGTOSHARETHEIRINFORMATIONWITHTHEAPPLICATION,DEVELOPER,ANDPARTNERSINQUESTIONWEPERFORMEDASERIESOFSEMISTRUCTUREDINTERVIEWSINTWOCITIESTODETERMINEWHETHERPEOPLEREADANDUNDERSTANDTHESEPERMISSIONSSCREENS,ANDTOBETTERUNDERSTANDHOWPEOPLEPERCEIVETHEIMPLICATIONSOFTHESEDECISIONSWEFINDTHATTHEPERMISSIONSDISPLAYSAREGENERALLYVIEWEDANDREAD,BUTNOTUNDERSTOODBYANDROIDUSERSALARMINGLY,WEFINDTHATPEOPLEAREUNAWAREOFTHESECURITYRISKSASSOCIATEDWITHMOBILEAPPSANDBELIEVETHATAPPMARKETPLACESTESTANDREJECTAPPLICATIONSINSUM,USERSARENOTCURRENTLYWELLPREPAREDTOMAKEINFORMEDPRIVACYANDSECURITYDECISIONSAROUNDINSTALLINGAPPLICATIONSKEYWORDSPRIVACY,SECURITY,ANDROID,APPLICATIONS,SMARTPHONE,PERMISSIONS,INFORMATIONDESIGN1INTRODUCTIONSINCETHELAUNCHOFTHEFIRSTANDROIDPHONEINOCTOBER2008THERISEOFTHEPLATFORMHASBEENMETEORICANDROIDPHONESACCOUNTEDFOROVERHALFOFALLSMARTPHONESALESASOFQ320116WITHEACHSMARTPHONESOLD,MOREUSERSAREDOWNLOADINGAPPLICATIONSFROMTHEANDROIDMARKETASOFMAY2011,GOOGLEREPORTEDTHATOVER200,000APPLICATIONSWEREAVAILABLEINTHEANDROIDMARKETANDTHATTHOSEAPPLICATIONSHADBEENINSTALLED45BILLIONTIMESINTOTAL2APPLICATIONSARENOTPRESCREENED,INSTEADUSERSAREGIVENTHEOPPORTUNITYTODECIDEWHICHSOFTWARETOINSTALLONTHEIRPHONEANDROIDAPPRATINGANDRECOMMENDATIONSITEAPPBRAINREPORTSTHATTHEREARENOW310,000APPLICATIONSINTHEANDROIDMARKET,ANDTHAT33PERCENTOFTHOSEARERATEDAT“LOWQUALITY”11HTTP//WWWAPPBRAINCOM/STATS/NUMBEROFANDROIDAPPSJBLYTHE,SDIETRICH,ANDLJCAMPEDSFC2012WORKSHOPS,LNCS7398,PP68–79,2012C?THEINTERNATIONALFINANCIALCRYPTOGRAPHYASSOCIATION201270PGKELLEYETALFOLLOWUPWORKBYHORNYACKETALDETAILEDAMETHODFORINTERCEPTINGTHESELEAKEDTRANSMISSIONSANDREPLACINGTHEMWITHNONSENSITIVEINFORMATION7THISFUNCTIONALITYWOULDALLOWUSERSPOSTINSTALLATIONPRIVACYCONTROLINTHEIRINVESTIGATIONTHEYDETAILEDTHECURRENTPERMISSIONREQUESTSOFTHETOP1100APPLICATIONSINTHEANDROIDMARKETASOFNOVEMBER2010HOWEVER,OURWORK,WHICHTESTSUSERS’UNDERSTANDINGSOFTHEMOSTCOMMONOFTHESEPERMISSIONS,FINDSUSERSHAVEGREATDIFFICULTYUNDERSTANDINGTHEMEANINGOFTHESETERMSTHUS,GIVINGUSERSTHEABILITYTOLIMITONACASEBYCASEBASISWOULDLIKELYBEINEFFECTIVEWITHOUTASSISTANCEWORKBYVIDASETALHASALSOSTUDIEDHOWAPPLICATIONSREQUESTPERMISSIONS,FINDINGPREVALENT“PERMISSIONSCREEP,”DUETO“EXISTINGDEVELOPERAPISWHICHMAKEITDIFFICULTFORDEVELOPERSTOALIGNTHEIRPERMISSIONREQUESTSWITHAPPLICATIONFUNCTIONALITY”15FELTETAL,INTHEIRANDROIDPERMISSIONSDEMYSTIFIEDWORK,ATTEMPTTOFURTHEREXPLAINPERMISSIONSTODEVELOPERS5HOWEVER,NEITHEROFTHESEPAPERSEXPLOREENDUSERSUNDERSTANDINGOFPERMISSIONSINOUROWNWORKWEFINDUSERSATTEMPTTORATIONALIZEWHYAPPLICATIONSREQUESTSPECIFICPERMISSIONS,TRYINGTOUNDERSTANDTHEDEVELOPERS’DECISIONS,EVENIFTHEIRUNDERSTANDINGOFTHESEREQUESTSISFLAWEDOTHERSWHOHAVELOOKEDATANDROIDPERMISSIONSHAVEATTEMPTEDTOCLUSTERAPPLICATIONSTHATREQUIRESIMILARPERMISSIONSTOSIMPLIFYTHECURRENTSCHEME3ORHAVEATTEMPTEDACOMPARISONOFMODERNSMARTPHONEPERMISSIONSYSTEMS1THEIRWORKFINDSTHATANDROIDPERMISSIONSPROVIDETHEMOSTINFORMATIONTOUSERSCOMPAREDTOOTHERMODERNSMARTPHONEOSSSUCHASSYMBIAN,WINDOWSPHONE7,ANDIOS,HOWEVEROURINTERVIEWSSHOWTHATMUCHOFTHEINFORMATIONPROVIDEDISNOTUNDERSTOODRESEARCHINPRIVACYPOLICIES,FINANCIALPRIVACYNOTICES,ANDACCESSCONTROLHAVEALLSIMILARLYSHOWNTHATPRIVACYRELATEDCONCEPTSANDTERMSAREOFTENNOTWELLUNDERSTOODBYUSERSEXPECTEDTOMAKEPRIVACYDECISIONS9,10,14OUREARLIERWORKSPECIFICALLYINVESTIGATEDHOWTHEINFORMATIONDISPLAYOFPRIVACYPOLICIESCOULDINFLUENCEUNDERSTANDING,FOCUSINGONSTANDARDIZEDFORMATS,TERMS,ANDDEFINITIONSWHILETHEANDROIDECOSYSTEMUSESASTANDARDFORMATANDTERMS,CLEARDEFINITIONSARENOTREADILYAVAILABLETOUSERS3ANDROIDPERMISSIONSANDDISPLAYANDROIDAPPPERMISSIONSAREDISPLAYEDTOUSERSATTHETIMETHEYDECIDETOINSTALLANYTHIRDPARTYAPPTHROUGHTHEANDROIDMARKETONTHEWEBORONTHEPHONEAPPSDOWNLOADEDFROMTHIRDPARTYAPPSTORESEG,ONLYANDROID,THEAMAZONAPPSTOREFORANDROID,ETCDONOTNECESSARILYSHOWFULLPERMISSIONSONTHEIRWEBSITES,HOWEVERUPONINSTALLINGTHEAPPLICATIONPACKAGEAPKTHEUSERISPRESENTEDWITHAPERMISSIONSSCREENVARIANTPERMISSIONSARESHOWNWITHINTHEANDROIDMARKETASDETAILEDINTHEFOLLOWINGDIAGRAM,FIGURE1AUSERBROWSESAPPLICATIONSUSINGTHEVIEWSHOWNINSCREEN1HERETHEREISATRUNCATEDDESCRIPTION,INFORMATIONABOUTRATINGS,REVIEWS,SCREENSHOTS,ETCIFAUSERDECIDESTOINSTALLTHEYCLICKTHEBUTTONLABELEDWITHTHEPRICEOFTHEAPPLICATION,HEREFREETHISBRINGSTHEMTOSCREEN2,WHERETHEYARE

簡介：字數英文字數英文34863486單詞，單詞，1771317713字符；中文字符；中文60106010漢字漢字出處出處HYUNJUHYUNJUKIM,M,KIMKIMTTCURRENTCURRENTSTATUSSTATUSANDANDIMPLICATIONSIMPLICATIONSOFOFMOBILEMOBILEGAMEGAMEDEVELOPMENTDEVELOPMENTUSINGUSINGEXISTINGEXISTINGINTELLECTUALINTELLECTUALPROPERTYPROPERTYRIGHTSJRIGHTSJTECHARTTECHARTJOURNALJOURNALOFOFARTSARTSANDANDIMAGINGIMAGINGSCIENCE,SCIENCE,2018,2018,535324282428外文文獻外文文獻CURRENTSTATUSANDIMPLICATIONSOFMOBILEGAMEDEVELOPMENTUSINGEXISTINGINTELLECTUALPROPERTYRIGHTSABSTRACTINRECENTYEARS,THEREHAVEBEENMANYCASESINWHICHACOMPANYSUCCEEDSINTHEMOBILEGAMEBUSINESSBYUSINGINTELLECTUALPROPERTYRIGHTSTHEREFORE,ITISNECESSARYTOIDENTIFYTHECURRENTSTATUSOFMOBILEGAMESTHATUSEPOPULARINTELLECTUALPROPERTYRIGHTSBASEDONTHEIMPLICATIONS,GAMEDEVELOPERSANDCONTENTDEVELOPERSSHOULDAWAREOFTHEGLOBALMARKETINTHEEARLYSTAGESOFGAMEDEVELOPMENTKEYWORDSINTELLECTUALPROPERTYRIGHTS,GAMEMARKET,ONLINEPCGAMES,MOBILEGAMES1INTRODUCTIONBECAUSEOFTHEADDEDVALUEANDECONOMICIMPACTRESULTINGFROMTHEGAMEINDUSTRY,RECENTLY,THEMOBILEGAMEINDUSTRYHASRISENASANEWINTELLECTUALPROPERTYBASEDINDUSTRYANDHASTAKENANIMPORTANTPOSITIONINTHECONTENTBASEDINDUSTRYINMANYPLACESINTHEWORLD,ASTHETRENDINTHEGAMEMARKETSHIFTEDFROMONLINEPCGAMESTOMOBILEGAMES,MANYGAMEDEVELOPMENTCOMPANIESHAVEBEENFOUNDEDSOLELYTODEVELOPANDSERVICEMOBILEGAMESTHESEARELESSEXPENSIVEANDREQUIREFIG1THESCALEANDGROWTHOFTHEKOREANGAMEMARKET20062016IN2016,THERAPIDGROWTHOFTHEMOBILEGAMEINDUSTRYLEDTOGROWTHOFTHEOVERALLKOREANDOMESTICGAMEMARKETBY72YEARONYEARANDOCCUPIED397OFTHEOVERALLGAMEMARKETTHEOVERALLSALESFROMTHEMOBILEGAMEMARKETWERE?4331TRILLION,WHICHWASVERYCLOSETOTHESALESOFTHEDECLININGPCGAMEINDUSTRYKOCCAALSOCONDUCTEDASURVEYTHATTARGETEDGROUPSOFKOREANSAGE10TO65YEARSOLDN3013ABOUTTHEIRRECENTGAMEMEDIUMONLINE,MOBILE,PACKAGE,CONSOLE,ARCADE,ETCTHERESULTOFSURVEYSHOWEDTHAT703OFPEOPLEPLAYEDGAMES,WHICHIS24HIGHERTHANTHEPREVIOUSYEAR,ANDTHATMOBILEGAMESHADTHEHIGHESTRECORDASAMEDIUMFORPLAYINGGAMES598ONEKEYTOTHERAPIDGROWTHINTHEMOBILEGAMEMARKETISTHEINVENTIONOFHIGHLYTECHNOLOGICAL,CONVENIENT,ANDEASYACCESSIBLEDEVICESLIKESMARTPHONESANDTABLETPCSHOWEVER,THERAPIDIMPROVEMENTOFHIGHSPEEDNETWORKSFROM4GTO5GHASALLOWEDTHEDISTRIBUTIONOFUSERFRIENDLYPLATFORMS,WHICHAREDRIVINGTHEEXPANSIONANDGROWTHOFTHEMOBILEGAMEMARKETMOREOVER,THEGENRESOFMOBILEGAMESHAVEEXPANDEDFROMEARLYSIMPLEPUZZLEANDBOARDGAMESTOGENRESTHATREQUIREFASCINATINGHIGHQUALITYGRAPHICSANDGRANDSCALESTORIESLIKEROLEPLAYINGGAMESRPG,SIMULATION,ANDMASSIVEMULTIPLAYER