简介：Aconsistentcheckpointingalgorithmwithshortfreezingtime(SFT)ispresentedinthispaper.Itsupportsfault-toleranceindistributedsystems,Thealgorithmhasshorterfreezingtime,loweroverhead,andsimplicityofrecovery.Tomakecheckpointtimeshorter,aspecialcontrolmessage(Munblock)isusedtoensurethataprocesscanrespondthecheckpointeventquicklyatanygiventime.Moreover,mainmemoryalgorithmisusedtoimprovetheconcurrencyofcheckpointing.ByusingSFT,thefreezingtimeresultedbycheckpointingislessthan0.03s.Furthermore,thecontrolmessagenumberofSFTisonlyO(n).

简介：Asteadyincreaseinconsumerdemands,andsevereconstraintsfrombothasomewhatdamagedenvironmentandnewlyinstalledgovernmentpolicies,requiretoday'sproductdesignanddevelopmenttobefasterandmoreefficientthaneverbefore,yetutilizingevenfewerresources.Newholisticapproaches,suchastotalproductlifecyclemodelingwhichembracesallaspectsofaproduct'slifecycle,arecurrentattemptstosolvetheseproblems.Withinthefieldofproductdesignandmodeling,featuretechnologyhasprovedtobeoneverypromisingsolutioncomponent.Owingtothetremendousincreaseininformationtechnology,totransferfromlowleveldataprocessingtowardsknowledgemodelingandinformationprocessingisabouttobringachangeinalmosteverycomputerizedapplication.Fromthisviewpoint,currentproblemsofbothfeatureframeworksandfeaturesystemsareanalyzedinrespecttostaticanddynamicconsistencybreakdowns.Theanalysisrangesfromearlystagesofdesigning(feature)conceptstofinalsystemimplementationandapplication.Forthefirsttime,anintegratedviewisgivenonapproaches,solutionsandpracticalexperience,withfeatureconceptsandstructures,providingbothafeatureframeworkanditsimplementationwithsufficientsystemarchitectureandcomputationalpowertomasterafairnumberofknownconsistencybreakdowns,whileprovidingforrobustcontextsforfeaturesemanticsandintegratedmodels.Withintoday'sheavyuseofinformationtechnologythesearepre-requisitesifthefullpotentialoffeaturetechnologyistobesuccessfullytranslatedintopractice.