Writing-a-SummaryPPT课件

WritingaSummary,1,.,HowtoSummarizeanArticle,1.Previewanarticlebytakingaquicklookingatthefollowing:a.Title.condensethemeaningofthearticle“AComprehensiveStudyofVisualCryptography”“AndroidSystemBroadcastActionBroadcastsYourPrivacy”“UsingUnitTestingtoDetectSanitizationFlaws”“HowDistributedAreTodaysDDosAttacks?”“TLSProxies:FriendorFoe?”,2,.,HowtoSummarizeanArticle,b.Subtitle.“PracticingObliviousAccessonCloudStorage:theGap,theFallacy,andtheNewWayForward”“Face/Off:PreventingPrivacyLeakageFromPhotosinSocialNetworks”,3,.,HowtoSummarizeanArticle,c.Firstandlastseveralparagraphs.Firstseveralparagraphs:introduceyoutothesubjectstatethepurposeofthearticleLastseveralparagraphs:presentconclusionsorasummary,4,.,AComprehensiveStudyofVisualCryptography,F1.Visualcryptographyisapowerfultechniquewhichcombinesthenotionsofperfectciphersandsecretsharingincryptographywiththatofrastergraphics.Abinaryimagecanbedividedintoshareswhichcanbestackedtogethertoapproximatelyrecovertheoriginalimage.Asecretsharingschemeenablesdistributionofasecretamongstnparties,suchthatonlypredefinedauthorizedsetswillbeabletoreconstructthesecret.Thesecret,intermsofvisualcryptographycanbereconstructedvisuallybysuperimposingshares.,5,.,AComprehensiveStudyofVisualCryptography,F2.Visualcryptographyallowsthetransmissionofvisualinformationandmanyaspectsofthisareaarecovered,includingitsinceptiontothecurrenttechniquesbeingemployedandactivelyresearchedtoday.ThissurveycoverstheprogressofVC,alongwiththecurrenttrendsandthevariousapplicationsforVC.,6,.,AComprehensiveStudyofVisualCryptography,F3.Havingtheabilitytohideinformationsuchaspersonaldetailsisverydesirable.Whenthedataishiddenwithinseparateimages(knownasshares),itiscompletelyunrecognizable.Whilethesharesareseparate,thedataiscompletelyincoherent.Eachimageholdsdifferentpiecesofthedataandwhentheyarebroughttogether,thesecretcanberecoveredeasily.Theyeachrelyononeanotherinordertoobtainthedecryptedinformation.,7,.,AComprehensiveStudyofVisualCryptography,F3.Thereshouldbenowaythatanyonecoulddeciphertheinformationcontainedwithinanyoftheshares.Whenthesharesarebroughttogether,decipheringispossiblewhenthesharesareplacedoveroneanother.Atthispoint,theinformationbecomesinstantlyavailable.Nocomputationalpowerisrequiredatallinordertodecrypttheinformation.Alldecryptionisperformedbythehumanvisualsystem(HVS).Thiskindofproblemisformallyreferredtoasasecretsharingproblem.,8,.,AComprehensiveStudyofVisualCryptography,L1.Itisapparentthatalotoftimeandefforthavebeendedicatedtovisualsecretsharingusingvisualcryptography.Manyoftheschemespresentedworkextremelywellandthecurrentstateofthearttechniqueshaveproventobeveryusefulformanyapplications,suchasverificationandauthentication.,9,.,AComprehensiveStudyofVisualCryptography,L2.Thefollowingtrendshavebeenidentifiedwithinvisualcryptography:1.Contrastimprovement.2.Sharesizeimprovement.3.Widerrangeofsuitableimagetypes(binarytocolourimages).4.EfficiencyofVCschemes.5.Abilitytosharemultiplesecrets.,10,.,HowtoSummarizeanArticle,d.Otheritems.headsorsubheadspictures,charts,ordiagramsanywordsorphrasessetoffinitalictypeorboldfacetype,11,.,AComprehensiveStudyofVisualCryptography,HeadsorSubheads2TraditionalVisualCryptography2.1BasicVisualCryptography2.2ExtendedVisualCryptography2.3SizeInvariantVisualCryptography2.4QualityEvaluation,12,.,AComprehensiveStudyofVisualCryptography,Pictures,Charts,orDiagrams,13,.,AComprehensiveStudyofVisualCryptography,Pictures,Charts,orDiagrams,14,.,HowtoSummarizeanArticle,2.Readthearticleforallyoucanunderstandthefirsttimethrough.Checkormarkmainpointsandkeysupportingdetails.Lookfordefinitions,examples,andenumerations(listsofitems).Identifyimportantpoints(QandA),15,.,HowtoSummarizeanArticle,Gobackandrereadmorecarefullytheareasyouhaveidentifiedasmostimportant.4.Takenotesonthematerial.gettingdownthemainideasandthekeysupportingpoints.,16,.,HowtoSummarizeanArticle,5.WritethedraftofyoursummaryIdentifythetitleandauthorofthework.Alsoincludethedateofpublicationandpublicationname.b.Thefirstsentenceofyoursummarytopicsentence=mainideaorthesisc.Donotwriteanoverlydetailedsummary.d.Donotimitatethestyleoftheoriginalwork.Expressinyourownwords.,17,.,HowtoSummarizeanArticle,Quotefromthematerialonlytoillustratekeypoints.f.Preservethebalancean