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1、毕业论文（设计）外文翻译题目：基于C++局域网聊天系统学院：数理与信息学院学生姓名：陈霆专业：计算机科学与技术班级：A07计算机指导教师：管林挺起止日期：2011.3.29至2011.6.182011年4月6日28Paper1P2PtrustmodelSummaryoftheP2Pnetworkproblemsareanalyzed,describedtheestablishmentofP2Pnetworktrustmodelneeds.P2Pnetworkontheexistingtrustmodelsaresummarized,pointingoutthedirec
2、tionoffutureresearch.IntroductionWiththeInternet'swidespreadpopularity,therichenduser'ssystemresources,aswellastherapidincreaseinnetworkbandwidth,thetraditionalClient/ServerNetworkApplicationModeserverperformancebottlenecksandsinglepointoffailureissueisnotonlylimitedthefulluseofendsystem
3、resources,alsoincreasinglyunabletomeetthenewdistributedapplications.TheP2Pnetworkstoworktogether,distributedinformationsharing,large-scaleparallelcomputingsuchasshowingtheuniqueadvantagesofthenewdevelopmenttomakeithot.P2Pnetworksarewillingtoshareresourcesonthenodethebasicassumptionthatea
4、chnodeshareitsownresourcesandfromothernodeswheretheresourcesfortheirownneeds.However,suchindividualstoprovideresourcesforthepublic,andnodebehaviorresultinunconstrainedmodeofP2Pnetworktherearethreeproblems.(1)ride(Free-Riding)problemFree-Rridingconsumptionofothernodesthatnodeonlycontribut
5、iontotheresourceswithoutsharingtheirownresources.ToGnutellaP2Pfilesharingsystem,forexample,70%ofthenodesistheFree-Rider.ThelatestmonitoringalsoshowsthatintheeDonkeyfile-sharingnetwork,about80%ofthenodesistheFree-Rider.(2)"PublicGoodsandsorrow"(theTragedyoftheCommons)problem"PublicGoodsan
6、dsorrow"meansthenetworkresourcesasanon-exclusivepublicresourcesaremostuncontrolleduseofP2Pnodes,accordingtostatistics,P2Ptrafficaccountedfor60%ofInternetZongtrafficflow,andtheuserisnotthetotalnumberofsignificantgrowthcases,P2Ptrafficisstillgrowingrapidly.Infact,P2Pnetworkusersofitsfundam
7、entalpurposeisrationaltomaximizetheirutility,butdoesnotconsiderthenetwork'soverall28effectiveness.(3)notreliableservices,andfraudP2Pnetwork,therearealargenumberofunreliableservicequality,andfraud.Tothemanyfile-sharingapplication,forexample,25%ofthedocumentswereforgeddocum
